Flow is being completely involved in an activity for its own sake. The ego falls away. Time flies. Every action, movement, and thought follows inevitably from the previous one, like playing jazz. Your whole being is involved, and you're using your skills to the utmost.

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

我们不试图预测未来；我们只是试图买入便宜的东西。

If you love it enough, anything will talk with you.