TuesdayFeb 24, 2026
Quotes: 53419 Authors: 9969
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.
As a well spent day brings happy sleep, so life well used brings happy death.
While I thought that I was learning how to live, I have been learning how to die.
All our knowledge has its origins in our perceptions.
Iron rusts from disuse, stagnant water loses its purity, and in cold weather becomes frozen; even so does inaction sap the vigor's of the mind.
Man has great power of speech, but the greater part thereof is empty and deceitful. The animals have little, but that little is useful and true; and better is a small and certain thing than a great falsehood.
Men of lofty genius when they are doing the least work are most active.
Nature never breaks her own laws.
The eye sees a thing more clearly in dreams than the imagination when awake.
As a well-spent day brings happy sleep, so a life well spent brings happy death.
I have offended God and mankind because my work didn't reach the quality it should have.
Vows begin when hope dies.
Just as courage imperils life, fear protects it.
Strive to preserve your health; and in this you will better succeed in proportion as you keep clear of the physicians, for their drugs are a kind of alchemy concerning which there are no fewer books than there are medicines.
Not to anticipate is already to moan.
Whoever in discussion adduces authority uses not intellect but memory.
Art is never finished, only abandoned.
He turns not back who is bound to a star.
Nothing will be left, Nothing in the air, nothing under the earth, nothing in the waters. All will be exterminated.
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind.
Experience does not err; only your judgment errs by expecting from her what is not in her power.
Savage is he who saves himself.
Every man at three years old is half his height.
Human subtlety ... will never devise an invention more beautiful, more simple or more direct than does nature, because in her inventions nothing is lacking, and nothing is superfluous.
Demetrius was wont to say that there was no difference between the words and speech of the unskilled and ignorant and the sounds and rumblings caused by the stomach being full of superfluous wind. This he said, not without reason, for, as he held, it did not in the least matter from what part of them the voice emanated, whether from the lower parts or the mouth, since the one and the other were of equal worth and importance.
The faculty of imagination is both the rudder and the bridle of the senses.
Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.
Intellectual passion drives out sensuality.
I have offended God and mankind because my work did not reach the quality it should have.
Life well spent is.long.
I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.
Truly man is the king of beasts, for his brutality exceeds theirs. We live by the death of others: We are burial places!
Man and the animals are merely a passage and channel for food, a tomb for other animals, a haven for the dead, giving life by the death of others, a coffer full of corruption.
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.
Inequality is the cause of all local movements.
Mechanics is the paradise of the mathematical sciences, because by means of it one comes to the fruits of mathematics.
No human investigation can be called real science if it cannot be demonstrated mathematically.
Whoever despises the high wisdom of mathematics nourishes himself on delusion and will never still the sophistic sciences whose only product is an eternal uproar.
Necessity is the mistress and guardian of Nature.
O speculators about perpetual motion, how many vain chimeras have you created in the like quest? Go and take your place with the seekers after gold.
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.
Thou, O God, dost sell us all good things at the price of labor.
Let proportion be found not only in numbers and measures, but also in sounds, weights, times, and positions, and what ever force there is.
It is easier to resist at the beginning than at the end.
You will never have a greater or lesser dominion than that over yourself.... the height of a man's success is gauged by his self-mastery; the depth of his failure by his self-abandonment.... And this law is the expression of eternal justice. He who cannot establish dominion over himself will have no dominion over others.
Where the spirit does not work with the hand, there is no art.
Shun those studies in which the work that results dies with the worker.
The human foot is a masterpiece of engineering and a work of art.
The Medici created and destroyed me.
As a well-spent day brings happy sleep, so life well used brings happy death.
O neglectful Nature, wherefore art thou thus partial, becoming to some of thy children a tender and benignant mother, to others a most cruel and ruthless stepmother? I see thy children given into slavery to others without ever receiving any benefit, and in lieu of any reward for the services they have done for them they are repaid by the severest punishments.
Wisdom is the daughter of experience.
O Lord, Thou givest us everything, At the price Of an effort.
Make your work to be in keeping with your purpose.
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