The law isn't justice. It's a very imperfect mechanism. If you press exactly the right buttons and are also lucky, justice may show up in the answer.
减少思虑,来调养心气;减少性欲来调养肾气;不要妄动,来调养骨气;戒止嗔怒,来调养肝气;饮食素淡,来调养胃气;减少话语,来调养神气;博鉴群书,来调养胆气;顺应时令,来调养元气。
学习应使人感到快乐,否则不能称之为真正的学习。