One cannot refute what one has not thoroughly understood.

All political action aims at either preservation or change. When desiring to preserve, we wish to prevent a change for the worse; when desiring to change, we wish to bring about something better. All political action is then guided by some thought of better or worse.

Philosophizing means, then, to ascend from public dogma to essentially private knowledge.

When speaking of a "body of knowledge" or of "the results of research," e.g., we tacitly assign the same cognitive status to inherited knowledge and to independently acquired knowledge. To counteract this tendency a special effort is required to transform inherited knowledge into genuine knowledge by revitalizing its original discovery, and to discriminate between the genuine and the spurious elements of what claims to be inherited knowledge.

Nothing ought to be said or done which could create the impression that unbiased reconsideration of the most elementary premises of philosophy is a merely academic or historical affair.

By becoming aware of the dignity of the mind, we realize the true ground of the dignity of man and therewith the goodness of the world, whither we understand it as created or uncreated, which is the home of man because it is the home of the human mind.

It is safer to try to understand the low in the light of the high than the high in the light of the low. In doing the latter one necessarily distorts the high, whereas in doing the former one does not deprive the low of the freedom to reveal itself as fully as what it is.