A man who dares to waste one hour of time has not discovered the value of life.

The good thing about science is that it's true whether or not you believe in it.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there and don't throw it away.

I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.