An idea is always a generalization, and generalization is a property of thinking. To generalize means to think.

Truth in philosophy means that concept and external reality correspond.

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

When liberty is mentioned, we must always be careful to observe whether it is not really the assertion of private interests which is thereby designated.

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

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