Motivating Motives next

Among all the mathematical discoveries which I've been privileged to make,
the concept of the motive still impresses me as the most fascinating,
the most charged with mystery —
indeed at the very heart of the profound identity
of geometry and arithmetic.

Alexander Grothendieck, Récoltes et Semaille

John C. Baez
Grothendieck's Approach to Mathematics
Chapman University
May 25, 2021