The better one is morally the less aware they are of their virtue.

Ignorance is the dominion of absurdity.

What is called virtue in the common sense of the word has nothing to do with this or that man's prosperity, or even happiness.

The best that we can do for one another is to exchange our thoughts freely; and that, after all, is about all.

If you think you can temper yourself into manliness by sitting here over your books, it is the very silliest fancy that ever tempted a young man to his ruin. You cannot dream yourself into a character; you must hammer and forge yourself one.

We enter the world alone, we leave it alone.

Science rests on reason and experiment, and can meet an opponent with calmness; [but] a creed is always sensitive.