"Karma (Sk.) Physically, action: metaphysically, the LAW OF RETRIBUTION, the Law of cause and effect or Ethical Causation. Nemesis, only in one sense, that of bad Karma. It is the eleventh Nidana in the concatenation of causes and effects in orthodox Buddhism; yet it is the power that controls all things, the resultant of moral action, the meta physical Samskâra, or the moral effect of an act committed for the attainment of something which gratifies a personal desire. There is the Karma of merit and the Karma of demerit. Karma neither punishes nor rewards, it is simply the one Universal LAW which guides unerringly, and, so to say, blindly, all other laws productive of certain effects along the grooves of their respective causations."
January 1, 1970
https://en.wikiquote.org/wiki/Karma