When translating one must proceed up to the intranslatable; only then one becomes aware of the foreign nation and the foreign tongue.

Talent is nurtured in solitude; character is formed in the stormy billows of the world.

Mannerism always wants to be finished and doesn't enjoy the process. Genuine, truly great talent, however, finds its greatest satisfaction in the production.

Should I not be proud, when for twenty years I have had to admit to myself that the great Newton and all the mathematicians and noble calculators along with him were involved in a decisive error with respect to the doctrine of color, and that I among millions was the only one who knew what was right in this great subject of nature?

Try novelties for salesman's bait, For novelty wins everyone.

Who can think wise or stupid things at all that were not thought already in the past.

Love, whose power youth feels, is not suitable for the elderly, just as little as anything that presupposes productivity. It is rare that productivity lasts through the years.