We study history not to be clever in another time, but to be wise always.
Art is born of the observation and investigation of nature.
There is no castle so strong that it cannot be overthrown by money.
I prefer the most unfair peace to the most righteous war.
Promises are not to be kept, if the keeping of them would prove harmful to those to whom you have made them.
It is the character of a brave and resolute man not to be ruffled by adversity and not to desert his post.
Not to know what has been transacted in former times is to be always a child. If no use is made of the labors of past ages, the world must remain always in the infancy of knowledge.
Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.
The Intellect engages us in the pursuit of Truth. The Passions impel us to Action.
The mansion should not be graced by its master, the master should grace the mansion.
Life is short, but art lives forever.
For there is assuredly nothing dearer to a man than wisdom, and though age takes away all else, it undoubtedly brings us that.
In a disordered mind, as in a disordered body, soundness of health is impossible.
Any man may make a mistake; none but a fool will stick to it. Second thoughts are best as the proverb says.
We are all excited by the love of praise, and the noblest are most influenced by glory.
Even if you have nothing to write, write and say so.
Nature abhors annihilation.
Reason should direct, and appetite obey.
He cannot be strict in judging, who does not wish others to be strict judges of himself.
They condemn what they do not understand.