I can’t remember who says it, but this comes up in the Syrrannite arc of ENT S4. That Humans reached the stars (warp drive) 100 years after their nuclear wars, when it took Vulcans 1500 years and suppressing their emotions. It was revealed as the main driving force behind the Vulcans saying Humans weren’t ready to visit other worlds.
I can’t remember who says it, but this comes up in the Syrrannite arc of ENT S4. That Humans reached the stars (warp drive) 100 years after their nuclear wars, when it took Vulcans 1500 years and suppressing their emotions. It was revealed as the main driving force behind the Vulcans saying Humans weren’t ready to visit other worlds.