The ability to associate depends, in turn, on the degree to which communities share norms and values and are able to subordinate individual interests to those of larger groups.

天地不夸耀自己的明亮，大水不夸耀自己的清澈，大火不夸耀自己的炎烈，有德之君不夸耀自己的德行高远，这样才能做众人的领袖。