That which can be lost cannot be deemed riches.
To speak well of a base man is much the same as speaking ill of a good man.
Study the science of art and the art of science.
First study the science, and then practice the art which is born of that science.
It vexes me greatly that having to earn my living has forced me to interrupt the work and to attend to small matters.
The knowledge of all things is possible
When taking a selfie, remember the most natural pose is still best
Where there is most feeling, there is the greatest martyrdom.
One has no right to love or hate anything if one has not acquired a thorough knowledge of its nature. Great love springs from great knowledge of the beloved object, and if you know it but little you will be able to love it only a little or not at all.
Those who are enamoured of practice without science are like a pilot who goes into a ship without rudder or compass and never has any certainty of where he is going. Practice should always be based upon a sound knowledge of theory.
Therefore, O students, study mathematics and do not build without foundations.
Darkness is absence of light. Shadow is diminution of light.
The faculty of imagination is both the rudder and the bridle of the senses.
Among the great things which are found among us the existence of Nothing is the greatest.
To lie is vile, to tell truth is excellent, if not noble.
Good writing comes from good talent.
We must doubt the certainty of everything which passes through the senses, but how much more ought we to doubt things contrary to the senses, such as the existence of God and the soul.
A painter should begin every canvas with a wash of black, because all things in nature are dark except where exposed by the light.
Not to anticipate is already to moan.
Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!
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.
The worst evil which can befall the artist is that his work should appear good in his own eyes.
The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.
You should prefer a good scientist without literary abilities than a literate one without scientific skills
The smallest feline is a masterpiece.
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