The most difficult thing is to recognize that sometimes we too are blinded by our own incentives. Because we don’t see how our conflicts of interest work on us.

Money is all about opportunity cost. Every time you spend on something, that's something you can't spend on something else.

Even the most analytical thinkers are predictably irrational; the really smart ones acknowledge and address their irrationalities.

I don't know what exactly the translation is but when we do consume something now, something else has to give at some point.

A very simple bad decision is to get into debt. And that is very expensive.

Take a brilliant, creative social scientist, without any respect for conventional wisdom and you get Ellen Langer. She is a fantastic storyteller, and Counterclockwise is a fascinating story about the unexpected ways in which our minds and bodies are connected.

If you want to spend more money in restaurants, use credit cards more than cash. If you want to spend less, use cash more than credit cards. But in general, we can think about how to use the pain of paying and how much of it do we want. And I think we have like a range. Credit cards have very little pain of paying, debit cards have a little bit more because you feel like today, at least it is coming out of your checking account, and cash has much more.