The universe clearly operates for the benefit of humanity. This can be readily seen from the convenient way the sun comes up in the morning, when people are ready to start the day.

I do not in fact use many puns. Certainly there are far fewer than people believe. But I suspect the ones I do occasionally use tend to hang around in people's memories for a while.

His progress through life was hampered by his tremendous sense of his own ignorance, a disability which affects all too few.

I didn't go to university. Didn't even finish A-levels. But I have sympathy for those who did.

Things have no power that humans don't put there.

Be careful what you wish for. You never know who will be listening.

That was the very centre of his genius - he invented things that anyone could have thought of, and men who can invent things that anyone could have thought of are very rare men.