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I don't like to say science unveils 'truths' about 'reality' because this just brings on endless discussions about what is true and what is real. To me, science is about finding useful descriptions of the world, where by 'useful' I mean they allow us to make predictions or explain already existing observations. The simpler an explanation, the more useful it is.

— Sabine Hossenfelder.

A man who has no imagination has no wings.

— Muhammad Ali.

Experimentation is an act of humility, an acknowlegdement that there is simply no way of knowing without trying something different.

— Sendhil Mullainathan.

Those who are certain of the outcome can afford to wait, and wait without anxiety.

— Helen Schucman. A Course in Miracles (1976).

Let us not, in the pride of our superior knowledge, turn with contempt from the follies of our predecessors. The study of the errors into which great mind have fallen in the pursuit of truth can never be uninstructive.

— Charles Mackay. Extraordinary Popular Delusions and the Madness of Crowds.

The most sophisticated people I know — inside they are all children.

— Jim Henson.

Más que amor, que dinero, que la fama, dame la verdad.

— Henry Thoreau.

Things and people are not what we wish them to be nor what they seem to be. They are what they are.

— Epictetus. The Enchiridion.

You can be sure of succeeding in your attacks if you only attack places which are undefended. You can ensure the safety of your defense if you only hold positions that cannot be attacked.

— Sun Tzu. Art of War.

Mathematics differs from physics and other applied sciences in this respect. A branch of physics, once it becomes obsolete or unproductive, tends to be forever part of the past. It may be a historical curiosity, perhaps the source of some inspiration to a modern scientist, but dead physics is usually dead for good reason.

Mathematics, by contrast, is full of channels and byways of that seem to lead nowhere iin one era and become major areas of study in another. The potential application of a piece of pure thought can never be predicted. This is why mathematicians value work in an aesthetic way, seeking elegance and beauty as artists do.

— James Gleick. Chaos: Making a New Science (2008).

...that in the shadowless atmosphere,
The knowledge of things lay round but unperceived.

— Wallace Stevens.

The instinct of imitation is implanted in man from childhood, one difference between him and other animals being that he is the most imitative of living creatures, and through imitation learns his earliest lessons; and no less universal is the pleasure felt in things imitated.

— Aristotle. The Poetics.

It is a mark of want of intellect to spend much time in things relating to the body, as to be immoderate in exercises, in eating and drinking, and in the discharge of other animal functions. These things should be done incidentally and our main strength be applied to our reason.

— Epictetus. The Enchiridion.

Cyparissus had the misfortune to kill by accident one of Apollo's favourite stags, which so preyed on his mind that he gradually pined away, and died of a broken heart. He was transformed by the god into a cypress-tree, which owes its name to this story.

— E. M. Berns. Myths and Legends of Ancient Greece and Rome.

Again, it may be impossible that there should be men such as Zeuxis painted. 'Yes,' we say, 'but the impossible is the higher thing; for the ideal type must surpass the reality.'

— Aristotle. The Poetics.

We see the value of animals even by the barbarians of Tierra del Fuego, by their killing and devouring their old women, in times of dearth, as of less value than their dogs.

— Charles Darwin. On The Origin of Species (1859).

We forget, that the birds which are idly singing round us, mostly live on insects or seeds, and are thus constantly destroying life.

— Charles Darwin. On The Origin of Species (1859).

The march of progress is in dumbing things down so the average person doesn't have to think, and the intelligent person isn't permitted to think.

— Harrison Bergeron (gowld).

Everybody is full of cracks and fissures, but usually we see people trying very hard to hide the places where they're split. Most people desperately want to heal their lesions, and keep trying to. Hiding them is sometimes takes for healing them (or for not having them).

— Philip Roth.

Haec est Italia diis sacra. (This is Italy, [land] sacred to the Gods.)

— Pliny the Elder.

What we call talent is no more than a projected reification of particular things done: hands placed correctly in the water, turns crisply executed, a head held high rather than low in the water. Through the notion of talent, we transform particular actions that a human being does into an object possessed, held in trust for the day when it will be revealed for all to see.

— Daniel Chambliss. The Mundanity of Excellence (1989).

An ingenious person should multiply the kinds of congress after the fashion of the different kinds of congress, performed according to the usage of each country, and the liking of each individual, generate love, friendship, and respect in the hearts of women.

— Vatsyayana. The Kama Sutra.

Such passionate actions and amorous gesticulations or movements, which arise on the spur of the moment, and during sexual intercourse, cannot be defined, and are as irregular as dreams. A horse having once attained the fifth degree of motion goes on with blind speed, regardless of pits, ditches, and posts in his way; and in the same manner a loving pair become blind with passion in the heat of congress, and go on with great impetuosity, paying not the least regard to excess. For this reason one who is well acquainted with the science of love, and knowing his own strength, as also the tenderness, impetuosity, and strength of the young woman, should act accordingly. The various mode of enjoyment are not for all time or for all persons, but they should only be used at the proper time, and in the proper countries and places.

— Vatsyayana. The Kama Sutra.

In a secluded vale of Elysium there flowed a gentle, silent stream, called Lethe (oblivion), whose waters had the effect of dispelling care, and producing utter forgetfulness of former events. According to the Pythagorean doctrine of the transmigration of souls, it was supposed that after the shades had inhabited Elysium for a thousand years they destined to animate other bodies on earth, and before leaving Elysium they drank of the river Lethe, in order they might enter upon their new career without any remembrance of the past.

— E. M. Berns. Myths and Legends of Ancient Greece and Rome.

Como muchos otros pueblos, los aztecas interpretan su propio nombre como algo que se refiere a su excelencia lingüística, por oposición a las otras tribus. “Los indios de esta Nueva España, según la común relación de las historias dellos, proceden de dos naciones diferentes: la una dellas llamada nauatlaca, que quiere dezir ‘gente que se explica y habla claro’, a diferencia de la segunda nación, porque entonces era muy salvaje y bárbara, sólo se ocupavan en andar a caça: [...] les pusieron por nombre ‘chichimeca’, que significa gente caçadora y que vive en aquel oficio agreste y campesino” (Trovar, p. 9).

— Tzvetan Todorov. La Conquista de America - El Problema del Otro.

El hombre inteligente tenderá, ante todo, a evitar cualquier dolor, cualquier molestia, y a encontrar el reposo y el ocio; buscará pues, una vida tranquila, modesta, defendida de los inoportunos, después de haber mantenido durante algún tiempo relaciones con lo que se llama los hombres, preferirá una existencia retirada, y, si es un espíritu muy superior, escogerá la soledad. Porque cuanto más posee en sí mismo un hombre, menos útiles le pueden ser los demás. Así pues, la superioridad de la inteligencia conduce a la insociabilidad.

— Schopenhauer.

Un estrecimiento invade mi ser, las lagrimas suceden a las lagrimas; el yerto corazón sientese blando y tierno; lo que poseo, lo percibo como en lontananza, y lo que desapareció truécase para mi palpitante realidad.

— Goethe. Fausto.

The oak tree's presence; it was a thing that nothing could change or threaten; it was his greatest symbol of strength.

— Ayn Rand. Atlas Shrugged.

Solo aceptamos una verdad cuando previamente la negamos desde el fondo del alma.

— Pablo Cohelo. El Alquimista.

A man has not seen a thing if he has not felt it.

— Henry David Thoreau.

It is by obeying the suggestions of a higher light within you that you escape from yourself and, in transit, as it were see with unworn sides of your eye, travel totally new paths.

— Henry David Thoreau.

La domesticación no favorece la supervivencia en condiciones no domésticas.

— James Lovelock.

Es inútil que pretendas brillar, con tu historia personal.

— Spinetta Jade. Alma de Diamante, "Dale gracias" (1980).

I've since found tricks that can make the world blaze up again in about fifteen seconds, and the effects last for hours. For example, if I have a group of students who are feeling fairly safe and comfortable with each other, I get them to pace about the room shouting out the wrong name for everything that their eyes light on. Maybe there's time to shout out ten wrong names before I stop them. Then I ask whether other people look larger or smaller—almost everyone sees people in different sizes, mostly as smaller. 'Do the outlines look sharper or more blurred?' I ask, and everyone agrees that outlines are many times sharper. 'What about the colours?' Everyone agrees there's far more colour, and that the colours are more intense. Often the size and shape of the room will seem to have changed, too. The students are amazed that such strong transformation can be effected by such primitive means—and specially that the effects last so long. I tell them that they only have to think about the exercise for the effects to appear again.

— Keith Johnstone. Impro