Your immediate environment is comprised of coffee shops, supermarkets, websites, apps and all kinds of things - none of which have an interest in your long-term or short-term financial well-being.

What kind of people would be able to rationalize better than other people? Better storytellers, right? Creative people, right? Because if you're creative, you find more ways to cheat and still yourself a story about why this is okay.

We have very strong intuitions about all kinds of things — our own ability, how the economy works, how we should pay school teachers. But unless we start testing those intuitions, we’re not going to do better.

With everything you do, in fact, you should train yourself to question your repeated behaviors.

One of the big lessons from behavioral economics is that we make decisions as a function of the environment that we're in.

The problem with opportunity cost is that opportunity cost is divided among many, many things.

When you're in pain, tomorrow doesn't exist - just the pain - and the only thing that you want in the world is for it to go away.