“Simply to acquiesce in skepticism can never suffice to overcome the restlessness of reason.”

The death of dogma is the birth of morality.

The outcome of an act commonly influences our judgment about its rightness, even though the former was uncertain, while the latter is certain.

Art is purposiveness without purpose.

He who would know the world must first manufacture it.

We are not rich by what we possess but by what we can do without.

It is impossible to conceive anything at all in the world, or even out of it, which can be taken as good without qualification, except a good will.

I had to deny knowledge in order to make room for faith.

If God should really speak to man, man could still never know that it was God speaking.

How things may be in themselves, without regard to the representations through which they affect us, is utterly beyond the sphere of our cognition.

Dare to think!

But although all our knowledge begins with experience, it does not follow that it arises from experience.

The reading of all good books is like a conversation with the finest minds of past centuries.

Look closely. The beautiful may be small.

In every department of physical science there is only so much science, properly so-called, as there is mathematics.

Nothing can possibly be conceived in the world, or even out of it, which can be called good, without qualification, except a good will.

Better the whole people perish than that injustice be done.