Everything comes from everything, and everything is made out of everything, and everything returns into everything.

True and great love springs out of great knowledge, and where you know little you can love but little or not at all.

Love shows itself more in adversity than in prosperity; as light does, which shines most where the place is darkest.

Men born in hot countries love the night because it refreshes them and have a horror of light because it burns them.

It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.

Putting your hand into a river, you simultaneously touch the last of what is passing and the first of what is coming.

All the bystanders at an event worthy of note adopt various gestures of admiration when contemplating the occurrence.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.

Truly man is the king of beasts, for his brutality exceeds them. We live by the death of others. We are burial places.

Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer.

Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.

The painter or draftsman ought to be solitary, in order that the well-being of the body not sap the vigour of the mind.

O Time with your teethy years! You swallow up all things little by little in a slow-motion, wrinkling process of dying.

The mind of a painter should be like a mirror which is filled with as many images as there are things placed before him.

Medicine is the restoration of discordant elements; sickness is the discord of the elements infused into the living body.

Sculptured figures which appear in motion, will, in their standing position, actually look as if they were falling forward.

Happy will be those who give ear to the words of the dead: - The reading of good works and the observing of their precepts.

When you put your hand in a flowing stream, you touch the last that has gone before and the first of what is still to come.

In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.

Virtue is our true wealth and the true reward of its possessor; it cannot be lost, it never deserts us until life leaves us.

There is no object so large but that at a great distance from the eye it does not appear smaller than a smaller object near.

Necessity is the mistress and guide of nature. Necessity is the theme and inventress of nature, her curb and her eternal law.

Everything proceeds from everything else and everything becomes everything, and everything can be turned into everything else.

Man's external form, marvellously constructed, is not much as compared with the divine soul that dwells inside that structure.

I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

I abhor the supreme folly of those who blame the disciples of nature in defiance of those masters who were themselves her pupils

I am not to blame for putting forward, in the course of my work on science, any general rule derived from a previous conclusion.

Though I may not . . . be able to quote other authors, I shall rely on that which is much greater and more worthy - on experience.

No one should ever imitate the style of another because, with regard to art, he will be called a nephew and not a child of nature.

A painter should begin every canvas with a wash of black, because all things in nature are dark except where exposed by the light.

Great love is born of great knowledge of the thing that is loved, and if you do not know it, you can love it little or not at all.

Fire is to represent truth because it destroys all sophistry and lies; and the mask is for lying and falsehood which conceal truth.

Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.

The vine that has grown old on an old tree falls with the ruin of that tree, and through that bad companionship must perish with it.

When the thing taken into union is perfectly adapted to that which receives it, the result is delight and pleasure and satisfaction.

Wherever good fortune enters, envy lays siege to the place and attacks it; and when it departs, sorrow and repentance remain behind.

The eye which turns from a white object in the light of the sun and goes into a less fully lighted place will see everything as dark.

The poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.

Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.

Men standing in opposite hemispheres will converse and deride each other and embrace each other, and understand each other's language.

Just as iron which is not used grows rusty, and water putrefies and freezes in the cold, so the mind of which no use is made is spoilt.

To discover the soul living in somebody's body, we watch the surrounding of the body, and if it's messy and disordered, so is the soul.

He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.

The spirit desires to remain with its body, because, without the organic instruments of that body, it can neither act, nor feel anything.

Each man is always in the middle of the surface of the earth and under the zenith of his own hemisphere, and over the centre of the earth.

Just as iron rusts from disuse, and stagnant water putrefies, or when cold turns to ice, so our intellect wastes unless it is kept in use.

I have discovered that a screw-shaped device such as this, if it is well made from starched linen, will rise in the air if turned quickly.

Let proportion be found not only in numbers and measures, but also in sounds, weights, times, and positions, and what ever force there is.

Of the four elements water is the second in weight and the second in respect of mobility. It is never at rest until it unites with the sea.

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