You should prefer a good scientist without literary abilities than a literate one without scientific skills
I have always felt it is my destiny to build a machine that would allow man to fly.
The smallest feline is a masterpiece.
He who has access to the fountain does not go to the water-pot.
The painter has the Universe in his mind and hands.
When Fortune comes, seize her in front with a sure hand, because behind she is bald.
He who in reasoning cites authority is making use of his memory rather than of his intellect.
I have offended God and mankind because my work didn't reach the quality it should have.
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.
In time and with water, everything changes.
In fact, whatever exists in the universe, in essence, in appearance, in the imagination, the painter has first in his mind and then in his hands ... it lies in his power to create them . . .
Art lives from constraints and dies from freedom.
Nature alone is the master of true genius.
simplicity is the best sophistication
No human investigation can be called real science if it cannot be demonstrated mathematically.
I am never weary of being useful... In serving others I cannot do enough. No labor is sufficient to tire me.
Envy wounds with false accusations, that is with detraction, a thing which scares virtue.
But to me all sciences seem vain and full of error that are not born of experience, mother of all certainty, and do not terminate in an actual experience.
I roamed the countryside searching for answers to things I did not understand.
The cat is nature's masterpiece.
The natural desire of good men is knowledge.
Every man at three years old is half his height
He only moves toward the perfection of his art whose criticism surpasses his achievement.
There is nothing that deceives us more than our own judgment when used to give an opinion on our own works. It is sound in judging the work of our enemies but not that of our friends, for hate and love are two of the most powerfully motivating factors found among living things.
When you are alone you are all your own.
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