Why is it that our memory is good enough to retain the least triviality that happens to us, and yet not good enough to recollect how often we have told it to the same person?

You have to talk about mistakes and then talk about what you have learned and how to move forward. You acknowledge missteps right away, you deal with them, and you move ahead.

It's possible to fight intolerance, stupidity and fanaticism when they come separately. When you get all three together it's probably wiser to get out, if only to preserve your sanity.

To spend more money, you have to have more money, but time is fixed and we all have the same amount to spare. How we choose to spend it can make a significant difference on the impact we have in our careers or in the world.

In the Universe the difficult things are done as if they were easy.

Whenever I'm asked to autograph a copy of 'Nudge,' the book I wrote with Cass Sunstein, the Harvard law professor, I sign it, 'Nudge for good.' Unfortunately, that is meant as a plea, not an expectation.