Physics is an attempt conceptually to grasp reality as something that is considered to be independent of its being observed. In this sense one speaks of physical reality.

artificial intellegance is no match for natural stupidity

If you can't explain what you are doing to a nine-year-old, then either you still don't understand it very well, or it's not all that worthwile in the first place.

The dog is very smart. He feels sorry for me because I receive so much mail; that's why he tries to bite the mailman.

The ancients knew something, which we seem to have forgotten.

There is nothing divine about morality, it is a purely human affair.

Never do anything against conscience even if the state demands it.