Luca Lampariello grew up monolingual in Rome. At 10, his teacher told him he simply wasn't cut out for language learning. Today, he speaks 15 languages – 10 of them fluently – and runs one of the largest polyglot YouTube channels in the world.

In this conversation, we cover: why he was bad at Italian before he was good at anything else, the role his 90-year-old grandmother played in shaping his curiosity, how watching American movies transformed his English in months, what he thinks about the "critical period" hypothesis, his 70/20/10 rule for language acquisition, and why he believes the biggest barrier to accent mastery is psychological, not biological.