Disasters are usually a good time to re-examine what we've done so far, what mistakes we've made, and what improvements should come next.

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.

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

The things that motivate us are to help other people, to feel that we're useful, to feel that we're getting better, to feel that we are kind of living to our potential, to get a sense of meaning. All of those things are positive.

When you get a checking account, you should have a savings account, and the number for the savings account should be one off of your checking account.

There's something about [cyclically] doing something over and over and over that seems to be particularly demotivating.

When it comes to the mental world, when we design things like health care and retirement and stock markets, we somehow forget the idea that we are limited. I think that if we understood our cognitive limitations in the same way that we understand our physical limitations … we could design a better world.