The ability to focus attention is crucial for learning, memory, and performance in complex tasks.

The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

I don’t need a reason to be alive.

Great leaders don’t just lead people—they inspire them to lead themselves.

Fear of failure paralyzes progress; embrace risks to drive meaningful change.

意志不是一种特殊的能力，而是心灵朝向明确目标的整体活动。

在任何情况下生存的最佳方法就是为之做好准备。