Freedom comes only to those who no longer ask of life that it shall yield them any of those personal goods that are subject to the mutations of time.
From Pythagoras (whether by way of Socrates or not) Plato derived the Orphic elements in his philosophy: the religious trend, the belief in immortality, the other-worldliness, the priestly tone, and all that is involved in the simile of the cave; also his respect for mathematics, and his intimate intermingling of intellect and mysticism.
Moreover, the attitude that one ought to believe such and such a proposition, independently of the question whether there is evidence in its favor, is an attitude which produces hostility to evidence and causes us to close our minds to every fact that does not suit our prejudices.
Suppose you are walking in a thunderstorm, and you say to yourself, I am not at all likely to be struck by lightning. The next moment you are struck. but you experience no surprise, because you are dead.
The secret of happiness is very simply this: let your interests be as wide as possible, and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile.