Every person must have a thought that changes them, or a book, or a word, or a moment; and if they don't, their life is wasted.

Be so good they can't ignore you.

反馈的研究就是稳定性的研究。

我们这个时代的挑战是创造一个可持续的能源未来。

The highest manifestation of life consists in this: that a being governs its own actions. A thing which is always subject to the direction of another is somewhat of a dead thing.