子曰：“學而時習之，不亦悅乎?有朋自遠方來，不亦樂乎?人不知而不慍，不亦君子乎?

”The
Master said, to learn and repeat what has learned at all times, is
that not a pleasure? To welcome friends' visit from afar, is this
delightful? To remain unsoured even if one’s merits are not seen by
others, is that not a so-called esquire?