Marriage is but slavery made to appear civilized.

I don't teach my students, I provide the circumstances in which they can learn.

I am a determinist. As such, I do not believe in free will. The Jews believe in free will. They believe that man shapes his own life. I reject that doctrine philosophically. In that respect I am not a Jew.

the contemplation of this world beckoned like a liberation

Relativity teaches us the connection between the different descriptions of one and the same reality.

Each of us visits this Earth involuntarily, and without an invitation. For me, it is enough to wonder at the secrets.

I never made one of my discoveries through the process of rational thinking