Because Christian morality leaves animals out of account, they are at once outlawed in philosophical morals; they are mere 'things,' mere means to any ends whatsoever. They can therefore be used for vivisection, hunting, coursing, bullfights, and horse racing, and can be whipped to death as they struggle along with heavy carts of stone. Shame on such a morality that is worthy of pariahs, and that fails to recognize the eternal essence that exists in every living thing, and shines forth with inscrutable significance from all eyes that see the sun!

To free a person from error is to give, and not to take away.

A man of intellect is like an artist who gives a concert without any help from anyone else, playing on a single instrument--a piano, say, which is a little orchestra in itself. Such a man is a little world in himself; and the effect produced by various instruments together, he produces single-handed, in the unity of his own consciousness. Like the piano, he has no place in a symphony; he is a soloist and performs by himself--in soli tude, it may be; or if in the company with other instruments, only as principal; or for setting the tone, as in singing.

Memory works like the collection glass in the Camera obscura: it gathers everything together and therewith produces a far more beautiful picture than was present originally.

One can never read too little of bad, or too much of good books: bad books are intellectual poison; they destroy the mind. In order to read what is good one must make it a condition never to read what is bad; for life is short, and both time and strength limited.

I am often surprised by the cleverness, and now and again by the stupidity, of my dog; and I have similar experiences with mankind.

Reasonable and vicious are quite consistent with each other, in fact, only through their union are great and far-reaching crimes possible