Money only appeals to selfishness and always tempts its owners irresistibly to abuse it. Can anyone imagine Moses, Jesus, or Gandhi armed with the money-bags of Carnegie?

Non-cooperation in military matters should be an essential moral principle for all true scientists.

I am a stronger follower of Veganism by principle, not just because of moral and aesthetic reasons. I truly believe in a Vegetarian lifestyle and I have faith and hopes in change in human destiny, thanks to the physical effects and benefits of a healthier diet and its influence on the character of the people. It will bring about some benefit and improvement to human society.

I do not believe that a moral philosophy can ever be founded on a scientific basis. … The valuation of life and all its nobler expressions can only come out of the soul’s yearning toward its own destiny. Every attempt to reduce ethics to scientific formulas must fail. Of that I am perfectly convinced.

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

He who finds though that lets us penetrate even a little deeper into the eternal mystery of nature has been granted great grace. He who, in addition, experiences the recognition, sympathy, and help of the best minds of his times, had been given almost more happiness than one man can bear.

The hardest thing to understand in the world is the income tax.