One cannot prescribe to anyone whether he should follow an ethic of absolute ends or an ethic of responsibility.

The ethic of conviction and the ethic of responsibility are not opposites. They are complementary to one another.

It is not true that good can only follow from good and evil only from evil, but that often the opposite is true.

A highly developed stock exchange cannot be a club for the cult of ethics.

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 by strict specialization can the scientific worker become fully conscious, for once and perhaps never again in his lifetime, that he has achieved something that will endure. A really definitive and good accomplishment is today always a specialized act.