A philosopher must be more than a philosopher.

"Do not call yourself an "artist-photographer" and make "artist-painters" and "artist-sculptors" laugh; call yourself a photographer and wait for artists to call you brother."

I see it only that thyself is here, and art and nature, hope and fate, friends, angels and the supreme being shall not be absent from the chamber where thou sittest.

Activity is contagious.

You cannot do a kindness too soon.

There is one topic peremptorily forbidden to all well-bred, to all rational mortals, namely, their distempers. If you have not slept or if you have slept or if you have head ache or sciatica or leprosy or thunder-stroke, I beseech you, by all angels, to hold your peace and not pollute the morning.

Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted.