The world is nothing but a great desire to live and a great dissatisfaction with living.
Dogs, also, bark at what they do not know.
War is the father and king of all: some he has made gods, and some men; some slaves and some free.
The only constant is change.
There is but one world common for those who are awake, but when men are asleep, each turns away into a world of his own.
When men dream, each has his own world. When they are awake, they have a common world.