There is not really any courage at all in attacking hoary or antiquated things, any more than in offering to fight one's grandmother. The really courageous man is he who defies tyrannies young as the morning and superstitions fresh as the first flowers. The only true free-thinker is he whose intellect is as much free from the future as from the past.
Ideas are dangerous, but the man to whom they are least dangerous is the man of ideas. He is acquainted with ideas, and moves among them like a lion-tamer. Ideas are dangerous, but the man to whom they are most dangerous is the man of no ideas. The man of no ideas will find the first idea fly to his head like wine to the head of a teetotaller.
The vault above us is not deaf because the universe is an idiot; the silence is not the heartless silence of an endless and aimless world. Rather the silence around us is a small and pitiful stillness like the prompt stillness of a sick room. We are perhaps permitted tragedy as a sort of merciful comedy, because the frantic energy of divine things would knock us down like a drunken farce. We can take our own tears more lightly than we could take the tremendous levities of the angels. So we sit perhaps in a starry chamber of silence while the laughter of the heavens is too loud for us to hear.
Humility is the luxurious art of reducing ourselves to a point, not to a small thing or a large one, but to a thing with no size at all, so that to it all the cosmic things are what they really are - of immeasurable stature.
I have investigated the dust-heaps of humanity, and found a treasure in all of them. I have found that humanity is not incidentally engaged, but eternally and systematically engaged, in throwing gold into the gutter and diamonds into the sea.
I would not say that old men grow wise, for men never grow wise; and many old men retain a very attractive childishness and cheerful innocence. Elderly people are often much more romantic than younger people, and sometimes even more adventurous, having begun to realize how many things they do not know.
The poetry of art is in beholding the single tower; the poetry of nature in seeing the single tree; the poetry of love in following the single woman; the poetry of religion in worshipping the single star.