These are good. I'll add a few that I've learned from others (mentors, family, etc)...not all about markets or trading in general but can be applied for sure...mostly when controlling your emotions while trading...
-The people with the most money usually aren't the smartest. They're just the ones who were willing to accept the risk and put up with the BS. (my personal favorite)
-Don't ever believe that you have all the answers. Nobody does. If you do, you will be proven wrong in due course.
-There are smart people, dumb people and everything in between. There is something to learn from all of them.
-For every complex problem, there is an answer that is clear, simple, and wrong.
-Always be aware of your inherent biases, and strive not to let them influence your decisions.
-Never make critical decisions when you're in an extreme emotional state whether that be depressed, raging mad, or euphorically happy.
Also just want to add... you can be emotionless without being a sociopath!
Ok enough with the cheesiness... I should probably just stay over on the longer term thread, but I just can't quit you guys. Really wish I could have a beer with some of you and solve all the world's problems...