Investing in clean energy technologies is not just good for the environment; it's good for business.

Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.

最好的数学家是那些不怕冒险的人。

在竞争激烈的市场中，创新是唯一的取胜之道。