子曰：“学而时习之，不亦说（yuè）乎？有朋自远方来，不亦乐乎？人不知而不愠，不亦君子乎？”

The master said, isn't it a pleasure to learn and constantly practice what is learnt?

Isn't it delightfu to have friends coming from afar?

Isn't he a gentleman who is not annoyed for not being understood?