You learned the two greatest thing in life, never rat on your friends, and always keep your mouth shut.

You learned the two greatest thing in life, never rat on your friends, and always keep your mouth shut.

你学到了人生中最重要的两件事，永远不要出卖你的朋友，永远保持沉默。

-- Robert De Niro 罗伯特·德尼罗