There is no such source of error as the pursuit of truth.

I think it better that in times like these a poet's mouth be silent, for in truth we have no gift to set a statesman right.

The key to wisdom is this - constant and frequent questioning, for by doubting we are led to question and by questioning we arrive at the truth.

Representation of the world, like the world itself, is the work of men they describe it from their own point of view, which they confuse with the absolute truth.

The only way into truth is through one's own annihilation through dwelling a long time in a state of extreme and total humiliation.