We usually lose today, because there has been a yesterday, and tomorrow is coming.

Taste is only to be educated by contemplation, not of the tolerably good but of the truly excellent. I therefore show you only the best works; and when you are grounded in these, you will have a standard for the rest, which you will know how to value, without overrating them.

A good man, through obscurest aspirations Has still an instinct of the one true way.

Paternity is based anyhow only upon conviction: I am convinced, therefore, I am the father.

Certain defects are necessary for the existence of individuality.

I do not know myself, and God forbid that I should.

Hypotheses are the scaffolds which are erected in front of a building and removedd when the building is completed. They are indispensable to the worker; but the worker must not mistake the scaffolding for the building.