My religion is to seek for truth in life and for life in truth, even knowing that I shall not find them while I live.

Science is the most intimate school of resignation and humility, for it teaches us to bow before the seemingly most insignificant of facts.

Only in solitude do we find ourselves; and in finding ourselves, we find in ourselves all our brothers in solitude.

Love personalizes all that it loves. Only by personalizing it can we fall in love with an idea.

Only he who attempts the absurd is capable of achieving the impossible.

Sometimes, to remain silent is to lie, since silence can be interpreted as assent.

Yes, yes, I see it all! — an enormous social activity, a mighty civilization, a profuseness of science, of art, of industry, of morality, and afterwords, when we have filled the world with industrial marvels, with great factories, with roads, museums and libraries, we shall fall exhausted at the foot of it all, and it will subsist — for whom? Was man made for science or was science made for man?