The power of a man, to take it universally, is his present means, to obtain some future apparent good.

I don't know if I have a philosophy. I just try to write the best book I can.

The only limits in life are the ones you set for yourself.

Learning is essentially a matter of stimulus-response connections.

The most exciting breakthroughs often come from interdisciplinary research.

You can't put a limit on anything. The more you dream, the farther you get.

让儿童参与工作，能增强他们对生活环境的责任感。

Sustainability is not an option; it’s a responsibility.