Some facts should be suppressed, or, at least, a just sense of proportion should be observed in treating them.

- Arthur Conan Doyle

You can't observe as much if you're observed by others.

- Chevy Chase

In 1956 we observed the electron antineutrino.

- Frederick Reines

No phenomenon is a real phenomenon until it is an observed phenomenon.

- John Archibald Wheeler

If I'd observed all the rules, I'd never have got anywhere.

- Marilyn Monroe