My past doesn't define me.
You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.
The imagination is a muscle. If it is not exercised, it atrophies.
Psychology should illuminate the practical workings of the mind, not just dissect its parts.
Physics is not just a science, it is a way of thinking about the world.