The Intelligent Investor's key lesson is

Mental model

Why do you save money for a vacation instead of investing it?

Sustainability

Can you grow forever without harming the planet?

Recency bias

Recency bias overvalues recent events in decision-making

List of Call the Midwife episodes

Older financial institutions likely to survive longer

Capital asset pricing model

Treynor-Black model combines active stock picking with a passive market portfolio

Mental accounting

Mental accounting influences spending and saving decisions