The laws of behavior can be derived from basic physiological principles.

The challenge of leadership is to be strong, but not rude; be kind, but not weak; be bold, but not bully; be thoughtful, but not lazy; be humble, but not timid; be proud, but not arrogant; have humor, but without folly.

Sustainability isn't an option; it's a responsibility we owe to future generations.

应对不自由世界的唯一方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。

The power of positive thinking is the ability to generate a feeling of certainty in yourself when nothing in the environment supports you.