It is certain that the Jew, if he desired-or if they were driven to it, as the antisemites seem to wish-could now have the ascendancy, nay, literally the supremacy, over Europe; that they are not working or planning for that end is equally sure... The resourcefulness of the modern Jews, both in mind and soul, is extraordinary.

It is perhaps just dawning on five or six minds that physics, too, is only an interpretation and exegesis of the world (to suit us, if I may say so!) and not a world-explanation.

You never exist quite so much as when you are not thinking

When one has finished building one's house, one suddenly realizes that in the process one has learned something that one really needed to know in the worst way - before one began.

[Heraclitus had] the highest form of pride [stemming] from a certainty of belief in the truth as grasped by himself alone. He brings this form, by its excessive development, into a sublime pathos by involuntary identification of himself with his truth.

Supposing truth is a woman -- what then?

Having a talent is not enough: one must also have your permission to have it--right, my friends?