And, as usual, the quotes are provided but not the source - the book, the essay, the speech, the year? These are things I'd really like to know! [Having sad that, these quotes certainly do sound like Asimov].
The true delight is in the finding out rather than in the knowing.
Self-education is, I firmly believe, the only kind of education there is.
Violence is the last refuge of the incompetent.
Never let your sense of morals get in the way of doing what's right.
People who think they know everything are a great annoyance to those of us who do.