We pay dearly for immortality: we die for it more than once during our lifetimes.

It is perhaps just dawning on five or six minds that physics, too, is only an interpretation and exegesis of the world (to suit us, if I may say so!) and not a world-explanation.

Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today

What an age experiences as evil is usually an untimely reverberation echoing what was previously experienced as good--the atavismof an older ideal.

Thus do I want man and woman to be: the one fit to wage war and the other fit to give birth, but both fit to dance with head and feet.

Once we have found ourselves, we must understand how from time to time to lose--and then to find--ourselves once again: assuming,that is, that we are thinkers. For a thinker it is a drawback to be bound to a single person all the time.

Metaphysical world.- It is true, there could be a metaphysical world; the absolute possibility of it is hardly to be disputed. We behold all things through the human head and cannot cut off this head; while the question nonetheless remains what of the world would still be there if one had cut it off.