Joy is the emotion which accompanies the fulfillment of our natures when we have lived up to our potential.

To help people save more, make saving the default option.

Failure is interesting—it’s part of making progress. You never learn from success, but you do learn from failure.

一切能被说出的都能够清楚地被说出，而我们不能谈论的，必须保持沉默。