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It pays to be obvious, especially if you have a reputation for subtlety.

The most obvious things are often right there, but you don't think about them because you've narrowed your vision.

It's much easier to work with an unknown.

A lot of the things I do are obvious things that for some reason are not done. I could never figure this out. Why don't people do the obvious?

'Obvious' is the most dangerous word in mathematics.

It requires a very unusual mind to undertake the analysis of the obvious.

The true facts are not always obvious. They often have to be looked for.

There's always the risk that there are unknown unknowns.

To be absolutely certain about something, one must know everything or nothing about it.

Then, at some point, you get identified with certain things.