translation.en: And I discovered another fact, which to me was more astonishing almost for the fact that I hadn't known it before at the age of 42, 43.
translation.zh: 这时我还发现了另一个 让我震惊的事情， 之所以震惊，大概是因为 我居然在42、43岁之前完全不知道。 之所以震惊，大概是因为 我居然在42、43岁之前完全不知道。