The Master said, “What a worthy man was Yan Hui! Living in a narrow alley, subsisting upon meager bits of rice and water—other people could not have borne such hardship, and yet it never spoiled Hui’s joy. What a worthy man was Hui!” (Analects 6.11)
The master said, 'Quietly to store up knowledge in my mind, to learn without flagging, to teach without growing weary, these present me with no difficulties.'