The loss of a much-prized treasure is only half felt when we have not regarded its tenure as secure.

Beauty is a primeval phenomenon, which itself never makes its appearance, but the reflection of which is visible in a thousand different utterances of the creative mind, and is as various as nature herself.

The ground that a good man treads is hallowed.

All perishable is but an allegory.

If nature is your teacher, your soul will awaken.

Mathematics has the completely false reputation of yielding infallible conclusions. Its infallibility is nothing but identity. Two times two is not four, but it is just two times two, and that is what we call four for short. But four is nothing new at all. And thus it goes on and on in its conclusions, except that in the higher formulas the identity fades out of sight.

Whatever you cannot understand, you cannot possess.