If you promote among several contending rivals, the rest, it is clear, being depressed, will not fight with a desire for doing your good.
अन्योन्यस्पर्धिनां होषां यद्येकं यं करिष्यसि। शेषा विमनसो व्यक्तं न योत्स्यन्ति हितास्तव॥