I’m not big on self-help-y type stuff, or the associated slogans, but I liked this:

“No” is no to one thing. “Yes” is no to a lot of things.

Also enjoyed finding out that:

Mankind constantly analyzes radio waves from outer space in the search for extraterrestrial intelligence. Since this analysis started, almost all of the signal sources have been identified. 37 signals, however, remain unexplained.

37signals