That’s A Lesson We Can All Learn:

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.

Not All Debt Is Bad. From Time To Time We Should Get Into Debt When There's A Good Reason For That.

For All Of Us, It's Very Hard To Think About Money, And Because Of That, We Need Help. In The Same Way That For All Of Us, It Is Hard To Eat Well, And We Need Some Help. The Poor Have A Particular Challenge, Which Is That Their Life Is Actually Much More Complex - And They're Much More Complex Cognitively.

The Problem With Opportunity Cost Is That Opportunity Cost Is Divided Among Many, Many Things.

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.