Look up at the stars, not down at your feet.

When I was first diagnosed with ALS, I was given two years to live. Now 45 years later, I am doing pretty well.

Theology is unnecessary.

Hang in there, retirement is only thirty years away!

In a world that is in chaos politically, socially and environmentally, how can the human race sustain another 100 years?

The rate of progress is so rapid that what one learns at school or university is always a bit out of date. Only a few people can keep up with the rapidly advancing frontier of knowledge, and they have to devote their whole time to it and specialize in a small area. The rest of the population has little idea of the advances that are being made or the excitement they are generating.

You cannot understand the glories of the universe without believing there is some Supreme Power behind it.