The only person you should try to be better than is the person you were yesterday.
The genome is a record of life's triumphs and failures.
I’ve always been an optimist and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place.
The world is indeed full of peril, and in it there are many dark places; but still there is much that is fair, and though in all lands love is now mingled with grief, it grows perhaps the greater.