“As long as science fails to discover the sources of life, as long as, on sea or in the sky, there is an abyss that is resistant to mathematical reckoning, as long as mankind in its steady progress is ignorant of where it's heading, as long as a mystery exists for man, there will be poetry!”

“So long as ignorance and poverty exist on earth, books of the nature of Les Miserables cannot fail to be of use.”

“Progress is a fine thing, but it's gone on long enough.”

“Our view of man will remain superficial so long as we fail to go back to that origin [of silence], so long as we fail to find, beneath the chatter of words, the primordial silence, and as long as we do not describe the action which breaks this silence. the spoken word is a gesture, and its meaning, a world.”

“As long as this exists, this sunshine and this cloudless sky, and as long as I can enjoy it, how can I be sad?”

“Like a bicycle, like a wheel that, once rolling, is stable only so long as it keeps moving but falls when its momentum stops, so the game between a man and woman, once begun, can exist only so long as it progresses. If the forward movement today is no more than it was yesterday, the game is over.”