Man has much power of discourse which for the most part is vain and false; animals have but little, but it is useful and true, and a small truth is better than a great lie.
Common Sense is that which judges the things given to it by other senses.
Vows begin when hope dies.
He who cannot establish dominion over himself will have no dominion over others.
Wood feeds the fire which burns it.
Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!
Who sows virtue ought to reap honour.
Test knowledge through experience, be prepared to make mistakes, and be persistent about it.
The color of the object illuminated partakes of the color of that which illuminates it.
Happy will they be who lend ear to the words of the dead.
He who can copy can do.
First study the science, and then practice the art which is born of that science.
I woke up only to find the rest of the world asleep.
The mind that engages in subjects of too great variety becomes confused and weakened.
The painter or draftsman ought to be solitary, in order that the well-being of the body not sap the vigour of the mind.
He who is fixed to a star does not change his mind.
When you are alone you are all your own.
If you do not rest on the good foundation of nature, you will labour with little honor and less profit.
Poetry is superior to painting in the presentation of words, and painting is superior to poetry in the presentation of facts. For this reason I judge painting to be superior to poetry.
The senses are of the earth, the reason stands apart from them in contemplation.
If the thing loved is base, the lover becomes base.
Beyond a doubt truth bears the same relation to falsehood as light to darkness.
Just as iron rusts from disuse... even so does inaction spoil the intellect.
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.
No human investigation can claim to be scientific if it doesn't pass the test of mathematical proof.
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