There is nothing divine about morality; it is a purely human affair. If people are good only because they fear punishment, and hope for reward, then we are a sorry lot indeed. What the individual can do is to give a fine example, and to have the courage to uphold ethical values .. in a society of cynics.

I think 99 times and find nothing. I stop thinking, swim in the silence, and the truth comes to me.

The scientist finds his reward in what Henri Poincare calls the joy of comprehension, and not in the possibility of application to which any discovery may lead.

Man owes his strength in the struggle for existence to the fact that he is a social animal.

At the same time, as social beings, we are moved in the relations with our fellow beings by such feelings as sympathy, pride, hate, need for power, pity, and so on.

It is high time the ideal of success should be replaced with the ideal of service.

What counts can't always be counted; what can be counted doesn't always count.