The maturity of man—that means, to have reacquired the seriousness that one had as a child at play.

The maturity of man—that means, to have reacquired the seriousness that one had as a child at play.

人的成熟，也就是说，重新获得了孩提时代玩耍时的严肃。

-- Friedrich Nietzsche 弗里德里希·尼采