Vladimir K. Zworykin quotes:

Imposing limitations on yourself is cowardly because it protects you from having to try, and perhaps failing.

It is what you are inside that matter. You, yourself, are your only real capital.

I didn't even dream it would be so good. But I would never let my children come close to the thing.

You can enjoy encouragement coming from outside, but you cannot need for it to come from outside.