The only thing we learn from history is that we learn nothing from history.

Reason is the substance of the universe, the design of the world is absolutely rational.

To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.

The learner always begins by finding fault, but the scholar sees the positive merit in everything.

All that is real is reasonable, and all that is reasonable is real.

Once the state has been founded, there can no longer be any heroes. They come on the scene only in uncivilized conditions.