As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.
The greatest deception men suffer is from their own opinions.
You do ill if you praise, but worse if you censure, what you do not understand.
Where the spirit does not work with the hand, there is no art.
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.
The truth of things is the chief nutriment of superior intellects.
The poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.
The human foot is a masterpiece of engineering and a work of art.
Just as courage imperils life, fear protects it.
Who sows virtue reaps honor.
Where there is shouting, there is no true knowledge.
I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.
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 function of muscle is to pull and not to push, except in the case of the genitals and the tongue.
He who wishes to be rich in a day will be hanged in a year.
I have offended God and mankind because my work didn't reach the quality it should have.
Beyond a doubt truth bears the same relation to falsehood as light to darkness.
Our life is made by the death of others.
Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!
There are three classes of people: those who see, those who see when they are shown, those who do not see.
It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.
In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.
Nothing strengthens authority so much as silence.
It's easier to resist at the beginning than at the end.
You can have no dominion greater or less than that over yourself.