The children of the revolution are always ungrateful, and the revolution must be grateful that it is so.

The children of the revolution are always ungrateful, and the revolution must be grateful that it is so.

革命的孩子们总是忘恩负义的，革命必须为此而感激。

-- Ursula K. Le Guin 娥苏拉·勒瑰恩