Man needs difficulties; they are necessary for health.

You must live life in such a spirit that you make in every moment the best of possibilities.

The individual disposition is already a factor in childhood; it is innate, and not acquired in the course of a life.

Enlightenment consists not merely in the seeing of luminous shapes and visions, but in making the darkness visible. The latter procedure is more difficult and therefore, unpopular.

But, if you have nothing at all to create, then perhaps you create yourself.

The word 'belief' is a difficult thing for me. I don't believe. I must have a reason for a certain hypothesis. Either I know a thing, and then I know it - I don't need to believe it.

I deliberately and consciously give preference to a dramatic, mythological way of thinking and speaking, because this is not only more expressive but also more exact than an abstract scientific terminology, which is wont to toy with the notion that its theoretic formulations may one fine day be resolved into algebraic equations.