Not all things are to be discovered; many are better concealed.
Nothing exists except atoms and empty space; everything else is opinion.
Life has its own hidden forces which you can only discover by living.
The present is theirs; the future, for which I really worked, is mine.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
All my life through, the new sights of nature made me rejoice like a child.
Rudeness is the weak man's imitation of strength.
Certain signs precede certain events.
Just as modern motorways have no room for ox-carts or wandering pedestrians, so modern society has little place for lives and ways that are too eccentric.
All that is not eternal is eternally out of date.
The pleasure of the moment begins to wither almost as soon as it blossoms; our pleasures are soon swallowed up in time's relentless torrent.
Our life always expresses the result of our dominant thoughts.
Life is more or less a lie, but then again, that's exactly the way we want it to be.
Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.
Life would be tragic if it weren't funny.
My art and profession is to live.
When making your choice in life, do not neglect to live.
Almost all our desires, when examined, contain something too shameful to reveal.
I'm never going to be disabled. I'm sick of being so healthy.
The desire to fly is an idea handed down to us by our ancestors who... looked enviously on the birds soaring freely through space... on the infinite highway of the air
If you want to keep your memories, you first have to live them.