“Δύο υπερβολές : ν’ αποκλείουμε το Λόγο, και να μη δεχόμαστε παρά μόνο το Λόγο.”

“Тогава си счел всички земни придобивки за нищо. И сега недей да милееш за нищо. Имай готовност, като захвърлиш всичко, да останеш гол.”

“Плътта, ако крепне, крепне за сметка на духа; и духът, ако съзрява, то ене по друг начин, а за сметка на упокояването на плътта.”

“‎”…θα πρέπει να αντιληφθείς, αγαπητή Τερέζα, ότι τα αντικείμενα δεν έχουν, κατά την άποψη μας, άλλη αξία από εκείνη που τους δίνει η φαντασία μας”

“I prefer for ‘my world’ to have the highest certification of being a faithful representation of the exterior world.”

“So many other planets & stars — could all those stars set over barren planets, beauty wasted? Or, are sunsets witnessed throughout the universe?”

“Without causality in the world, there is no point in educating people, or making any moral or political appeal.”

“Il pessimismo radicale sconfina nell’ottimismo.”

“Mendel had a remarkable nature as a boy. I’m not talking about miracles. Miracles are a burden for a tzaddik, not the proof of one. Miracles prove nothing except to those whose faith is bought very cheap, sir. There was something in Mendele. There was a fire.”

“Sin is a gravitation.”

“Teaching the layperson (divulgare) is not distorting (tergiversare) the subject, but educating the public; and it is our duty as scientists to educate without distorting the essence of the scientific knowledge attained by humanity. The future of our society depends upon this premise.”

“…questioning the existence of God may begin because of one’s sense of disappointment rather than because of a line of reasoning. Disappointment can bring disillusionment, and disillusionment can get quite a grip on us. It may be the case that, next to the grip of disillusionment, whatever reasons we can think of to believe that God exists or that God is good will appear weak. So sometimes the reason we do not believe or the reason we stop believing is not the intellectual challenge to believing in God. Sometimes, the grip of disillusionment cannot be matched by things that seem to be only abstract or theoretical.”

“In politics, the pen is at its heaviest because it is weighed down by the collective responsibility it holds towards its people and their future in the eyes of the world.”

“A novel is never anything but a philosophy expressed in images. And in a good novel the philosophy has disappeared into the images.”

“As far as I am concerned, philosophic questioning is just as likely to make you confused and depressed as it is to improve your condition.”