Necessity is an interpretation, not a fact.

That which does not destroy, strengthens.

There is perhaps nothing so admirable in Christianity and Buddhism as their art of teaching even the lowest to elevate themselves by piety to a seemingly higher order of things, and thereby to retain their satisfaction with the actual world in which they find it difficult enough to live - this very difficulty being necessary.

Your enemy shall ye seek; your war shall ye wage, and for the sake of your thoughts! And if your thoughts succumb, your uprightness shall still shout triumph thereby!

We should not talk about our friends: otherwise we will talk away the feeling of friendship.

Whenever I climb I am followed by a dog called 'Ego'.

He who does not need to lie is proud of not being a liar.