Maturity consists in the discovery that there comes a critical moment where everything is reversed, after which the point becomes to understand more and more that there is something which cannot be understood.

You live life looking forward, you understand life looking backward.

In actuality, no one ever sank so deep that he could not sink deeper, and there may be one or many who sank deeper. So it is always possible to be happy and grateful that things are not worse!

In a mathematical proposition, for example, the objectivity is given, but therefore its truth is also an indifferent truth.

It is the duty of the human understanding to understand that there are things which it cannot understand, and what those things are. Human understanding has vulgarly occupied itself with nothing but understanding, but if it would only take the trouble to understand itself at the same time it would simply have to posit the paradox.

One can advise comfortably from a safe port.

Human relations are like the irregular verbs in a number of languages where nearly all verbs are irregular.