The two enemies of human happiness are pain and boredom.

• There is no absurdity so palpable but that it may be firmly planted in the human head if you only begin to inculcate it before the age of five, by constantly repeating it with an air of great solemnity.
• A man can be himself only so long as he is alone.
• To live alone is the fate of all great souls.
• Change alone is eternal, perpetual, immortal.
• Hatred is an affair of the heart contempt that of the head.
• Treat a work of art like a prince. Let it speak to you first.
• Religion is the masterpiece of the art of animal training, for it trains people as to how they shall think.
• It is with trifles, and when he is off guard, that a man best reveals his character.
• Change alone is eternal, perpetual, immortal.
• They tell us that suicide is the greatest piece of cowardice... that suicide is wrong when it is quite obvious that there is nothing in the world to which every man has a more unassailable title than to his own life and person.