To appreciate the beauty of a snow flake, it is necessary to stand out in the cold.
Plato is my friend, but truth is a better friend.
It is our choice of good or evil that determines our character, not our opinion about good or evil.
If every tool, when ordered, or even of its own accord, could do the work that befits it... then there would be no need either of apprentices for the master workers or of slaves for the lords.
Philosophy begins with wonder.
At his best, man is the noblest of all animals; separated from law and justice he is the worst.