The most difficult part about understanding something is that we understand it all.
No problem is ever solved in the same consciousness thas was used to create it.
Pure mathematics is, in its way, the poetry of logical ideas.
I am not a Jew in the sense that I would demand the preservation of the Jewish or any other nationality as an end in itself. Rather, I see Jewish nationality as a fact and I believe that every Jew must draw the consequences from this fact.
Imagination is the highest form of research.
My political ideal is democracy. Let every man be respected as an individual and no man idolized.