The Master said, A gentleman, in his plans, thinks of the Way; he does not think how he is going to make a living. Even farming sometimes entails 5 times of shortage; and even learning may incidentally lead to high pay. But a gentleman's anxieties concern the progress of the Way; he has no anxiety concerning poverty.
Not to converse with a man worthy of conversation is to waste the man. To converse with a man not worthy of conversation is to waste words. The wise waste neither men nor words.
Yin and yang, male and female, strong and weak, rigid and tender, heaven and earth, light and darkness, thunder and lightning, cold and warmth, good and evil...the interplay of opposite principles constitutes the universe.