To be happy, you must learn to forget yourself.
A fool flatters himself, a wise man flatters the fool.
Nothing really immoral is ever permanently popular.
Hobbies should be wives, not mistresses. It will not do to have more than one at a time. One hobby leads you out of extravagance; a team of hobbies you cannot drive till you are rich enough to find corn for them all. Few men are rich enough for that.
Philosophy, while it soothes the reason, damps the ambition.
Every man of sound brain whom you meet knows something worth knowing better than yourself. A man, on the whole, is a better preceptor than a book. But what scholar does not allow that the dullest book can suggest to him a new and a sound idea?