Through searching out origins, one becomes a crab. The historian looks backwards, and finally he also believes backwards.

One must not let oneself be misled: they say 'Judge not!' but they send to Hell everything that stands in their way.

God is a too palpably clumsy answer; an answer which shows a lack of delicacy towards us thinkers-fundamentally, even a crude prohibition to us: you shall not think!

Belief in truth begins with doubting all that has hitherto been believed to be true.

Our shortcomings are the eyes with which we see the ideal.

Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.

Do I advise you to love the neighbor? I suggest rather to escape from the neighbor and to love those who are the farthest away from you. Higher than the love for the neighbor is the love for the man who is distant and has still to come.