We come into the world alone and we die alone. Why, in life, should we be any less alone?
There is only a finger's difference between a wise man and a fool.
I am not an Athenian or a Greek, but a citizen of the world.
Protagoras asserted that there are two sides to every question, exactly opposite to each other.
By worrying as little as possible about fame.
The most beautiful thing in the world is freedom of speech.