解释：时机未到，就不能勉强行事；行事不探求事理，就不可能达到成功。

We are all in the gutter, but some of us are looking at the stars.

Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

Collaboration across industries is the key to solving the world's most pressing problems.