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.0:46 Luca’s Monolingual Childhood and Grandmother’s Influence2:43 “I Was Actually Pretty Poor at My Native Language”5:52 “I Wanted to Be Like an American” – How Luca Learned English11:55 Can Anyone Learn a Foreign Language to Fluency?16:35 A Concrete Learning Plan: The American in Italy20:16 The 70/20/10 Rule for Input, Output, and Grammar21:41 The Critical Period Hypothesis – Can Adults Sound Like Natives?25:36 Why Some Immigrants Never Lose Their Accent29:51 Luca’s Journey Through German, Spanish, Dutch, and Russian34:42 “Japanese Rejected Me – But I’m Going Back With a Vengeance”37:32 What Are The Most Beautiful Languages? Greek, German, Russian