I think in many ways narrow minded-attitudes lead to extreme thinking.
I think it's a very firm part of human nature that if you surround yourself with like-minded people, you'll end up thinking more extreme versions of what you thought before.
The problem with all-or-nothing thinking is that it stops people even taking the first steps. The thought of never having pepperoni pizza again somehow turns into an excuse to keep ordering it every week.
You can't behave in a calm, rational manner. You've got to be out there on the lunatic fringe.
Rarely do we arrive at the summit of truth without running into extremes; we have frequently to exhaust the part of error, and even of folly, before we work our way up to the noble goal of tranquil wisdom.
Oh my, justifying reasons why Is an absolutely insane resolution to live by ((Live High))
The most important thing is not to think very much about oneself. To investigate candidly the charge; but not fussily, not very anxiously. On no account to retaliate by going to the other extreme -- thinking too much.
You can be an extreme materialist, thinking that economic development ultimately determines everything; then you are truly ideological.
I have a very extreme state of mind. Things are very black or very white.
I have two speeds, nothing and full pelt.