Truth is the kind of error without which a certain species of life could not live. The value for life is ultimately decisive.

All mankind is divided, as it was at all times and is still, into slaves and freemen.

Genuine historical knowledge requires nobility of character, a profound understanding of human existence - not detachment and objectivity.

The value of many men and books rests solely on their faculty for compelling all to seek out the most hidden and intimate things.

The man who does not wish to be one of the mass only needs to cease to be easy on himself.

You say that I should be your teacher! See to it that I am your pinion and not your brake.

All isolation is wrong so say the herd. And long didst thou belong to the herd.