Understand that a great manager is essentially an organizational engineer. - Ray Dalio

no system of government, no economic system, no currency, and no empire lasts forever, yet almost everyone is surprised and ruined when they fail.

In trading you have to be defensive and aggressive at the same time. If you are not aggressive, you are not going to make money, and if you are not defensive, you are not going to keep money.

I saw that to do exceptionally well you have to push your limits and that, if you push your limits, you will crash and it will hurt a lot. You will think you have failed — but that won’t be true unless you give up.