"All the gold which is under or upon the earth is not enough to give in exchange for virtue."

"By such reflections and by the continuance in them of a divine nature, the qualities which we have described grew and increased among them; but when the divine portion began to fade away, and became diluted too often and too much with the mortal admixture, and the human nature got the upper hand, t

"I perplex others, not because I am clear, but because I am utterly perplexed myself."

"The key is not to live but to live well."

"By harming a horse, you decrease his excellence. Thus, by harming a person, you decrease their excellence."

"We shall be better and braver and less helpless if we think that we ought to enquire, than we should have been if we indulged in the idle fancy that there was no knowing and no use in seeking to know what we do not know;— that is a theme upon which I am ready to fight, in word and deed, to the utmo

"A life without investigation is not worth living."

"Beauty is certainly a soft, smooth, slippery thing, and therefore of a nature which easily slips in and permeates our souls."

"I used to imagine that no human can make men good; but I know better now."