All our knowledge is the offspring of our perceptions.
The eye is the window of the human body through which it feels its way and enjoys the beauty of the world.
The artist sees what others only catch a glimpse of.
I am never weary of being useful... In serving others I cannot do enough. No labor is sufficient to tire me.
The soul is content to stay imprisoned in the human body... for through the eyes all the various things of nature are represented to the soul.
It is a far worthier thing to read by the light of experience than to adorn oneself with the labors of others.
Those who are inspired by a model other than Nature, labor in vain.
That which can be lost cannot be deemed riches.
simplicity is the best sophistication
People of higher talent work, even if they seem to do nothing
You do ill if you praise, but worse if you censure, what you do not understand.
He who does not understand the supreme certainty of mathematics is wallowing in confusion.
Putting your hand into a river, you simultaneously touch the last of what is passing and the first of what is coming.
To speak well of a base man is much the same as speaking ill of a good man.
Art lives from constraints and dies from freedom.
It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.
There is no result in nature without a cause; understand the cause and you will have no need of the experiment.
The worst evil which can befall the artist is that his work should appear good in his own eyes.
Love, Fear, and Esteem, - Write these on three stones.
Envy wounds with false accusations, that is with detraction, a thing which scares virtue.
Experience does not err. Only your judgments err by expecting from her what is not in her power.
Although nature commences with reason and ends in experience it is necessary for us to do the opposite, that is to commence with experience and from this to proceed to investigate the reason.
The painter or draftsman ought to be solitary, in order that the well-being of the body not sap the vigour of the mind.
Just as eating against one's will is injurious to health, so studying without a liking for it spoils the memory, and it retains nothing it takes in.
True and great love springs out of great knowledge, and where you know little you can love but little or not at all.
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