teaser0:30 attending a class by Witten5:15 math vs physics: difference?9:20 doing math: happiness and frustration13:10 what changes with age17:10 non-math problems: oh no! ;)23:23 advice for getting back into math26:45 how to prove Langlands correspondence...31:49 when math doesn't work33:25 raising kids: thoughts36:00 book recommendation from Dennis37:38 stories about India40:36 beautiful non-math hobby42:40 hot take on grant system45:06 guess Dennis' favourite animal!47:12 advice to young mathematicians