[O]nly if every individual strives for truth can humanity attain a happier future; the atavisms in each of us that stand in the way of a friendlier destiny can only thus be rendered ineffective.

I learned many years ago never to waste time trying to convince my colleagues.

If they want to see me, here I am. If they want to see my clothes, open my closet and show them my suits.

I am convinced there is only one way to eliminate these grave evils, namely through the establishment of a socialist economy, accompanied by an educational system which would be oriented toward social goals.

The illusion that we are separate from one another is an optical delusion of our consciousness.

The sole function of education...[is] to open the way to thinking and knowing, and the school, as the outstanding organ for the people's education, must serve that end exclusively.

I have repeatedly said that in my opinion the idea of a personal God is a childlike one.