Idleness is the parent of psychology.

In constructing concepts, we overlook the fact that no two things are the same. There is no such thing as the concept of a leaf, only billions and billions of leaves.

One must learn to be a sponge if one wants to be loved by hearts that overflow.

Yet where is your inner value when you no longer know what it is to breathe freely; when you no longer have freedom over your own selves

What, then is truth?... Truths are illusions about which one has forgotten that this is what they are.

I teach the No to all that makes weak--that exhausts. I teach the Yes to all that strengthens, that stores up strength, that pride.

Everything good is the transmutation of something evil: every god has a devil for a father.