[In] the realm of science, ... what we have achieved will be obsolete in ten, twenty or fifty years. That is the fate, indeed, that is the very meaning of scientific work. ... Every scientific "fulfillment" raises new "questions" and cries out to be surpassed rendered obsolete. Everyone who wishes to serve science has to resign himself to this.

Within the confines of the lecture hall, no other virtue exists but plain intellectual integrity.

A government is an institution that holds a monopoly on the legitimate use of violence.

The fate of an epoch that has eaten of the tree of knowledge is that it must...recognize that general views of life and the universe can never be the products of increasing empirical knowledge, and that the highest ideals, which move us most forcefully, are always formed only in the struggle with other ideals which are just as sacred to others as ours are to us.

Only he has the calling for politics who is sure that he shall not crumble when the world from his point of view is too stupid or too base for what he wants to offer. Only he who in the face of all this can say 'In spite of all!' has the calling for politics.

The fully developed bureaucratic apparatus compares with other organisations exactly as does the machine with the non-mechanical modes of production.

Either one lives for politics or one lives off politics.