Stephen Fry is regarded as one of the UK's brightest brains. He's a prolific writer and actor who can apply his shrewd analysis and razor-sharp wit to just about any subject. So how does he keep his mind curious? 

On today's encore episode of the Braincare Podcast, Stephen shares his thoughts on intelligence of every shade - cognitive, mathematical, poetic - down to the very tautology of the word, and where he falls on the nature-nurture divide. 

We talk about:

• Whether upbringing shapes our future intelligence 
• The difference between intelligence and wisdom
• The privilege of not-knowing and the Dunning–Kruger effect
• How our attitude to learning can impact our intelligence