The most important human endeavor is the striving for morality in our actions.

In the midst of difficulty lies opportunity.

It would be my greatest sadness to see Zionists (Jews) do to Palestinian Arabs much of what Nazis did to Jews.

Rejoice with your family in the beautiful land of life.

The fanatical atheists are like slaves who are still feeling the weight of their chains which they have thrown off after hard struggle. They are creatures who—in their grudge against traditional religion as the "opium of the masses"—cannot hear the music of the spheres.

Conviction is a good motive, but a bad judge.

I have never obtained any ethical values from my scientific work.