Dare to know! Have the courage to use your own intelligence! - Immanuel Kant

Only by what a man does heedless of enjoyment, in complete freedom and independently of what he can produce passively from the hand of nature, does he give absolute worth to his existence, as the real existence of a person. Happiness, with all its plethora of pleasures, is far from being an unconditioned good.

Faulheit und Feigheit sind die Ursachen, warum ein so großer Teil der Menschen, nachdem sie die Natur längst von fremder Leitung frei gesprochen, dennoch gerne zeitlebens unmündig bleiben; und warum es anderen so leicht wird, sich zu deren Vormündern aufzuwerfen.

The busier we are, the more acutely we feel that we live, the more conscious we are of life.