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.

Money are very difficult to think about. So, we think about money as the opportunity cost of money. So, we at some point went to a Toyota dealership and we asked people, what will you not be able to do in the future if you bought this Toyota?

Once we start thinking of ourselves as polluted, there is not much incentive to behave well, and the trip down the slippery slope is likely.

If you ever go bar hopping, who do you want to take with you? You want a slightly uglier version of yourself. Similar ... but slightly uglier.

Not all debt is bad. From time to time we should get into debt when there's a good reason for that.

The problem is that people basically dangle debt in front of us. And the cost for the poor of course is much higher than for the wealthy.

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