Religion is a byproduct of fear.

When beauty is universal, it loses its power to move the heart, and only its absence can produce any emotional effect.

I believe any malevolent supercivilisation would have rapidly self-destructed as we may be in the process of doing ourselves. If we do have contact, physical contact with aliens, I think it will be benign.

I have never grown up, but I will never stop growing.

I am an optimist. Anyone interested in the future has to be otherwise he would simply shoot himself.

Only feeble minds are paralyzed by facts.

Human judges can show mercy. But against the laws of nature, there is no appeal.