Fool me once, shame on me. Fool me twice, shame on glue.

Always try to give people the benefit of the doubt. You never know what someone else is going through.

I discovered this one just yesterday, reading a Nero Wolfe detective novel. I kind of like it:

The avoidance of idiocy should be the primary and constant concern of every intelligent person. It is mine. I am sometimes successful.

Jack of all trades, master of one.

If you don’t know why, somebody else does.

If it aint broke don’t break it.

Keep on keepin’ on…

Before doing anything ask yourself “would a stupid person do that?” If they would, do not do that thing.

In your deathbed you’ll regret more the things you didn’t do than what you did

DON’T PANIC

I will not die, even if they kill me

Kill all humans.

Safety third!

Probably something like “It’s probably not as bad as you think” which applies to people, situations, difficulty of talks and a lot other stuff.

If you’re the smartest person in the room, then you’re in the wrong room.