Gravitation is not responsible for people falling in love.

My internal and external life depend so much on the work of others that I must make an extreme effort to give as much as I receive.

If God has created the world, his primary worry was certainly not to make its understanding easy for us

One must shy away from questionable undertakings, even when they bear a high-sounding name.

A man's moral worth is not measured by what his religious beliefs are but rather by what emotional impulses he has received from Nature during his lifetime.

Only the one who does not question is safe from making a mistake.

Mozart's music is so pure and beautiful that I see it as a reflection of the inner beauty of the universe.