" We are being developed by what we have done, and what we do, not only physically and verbally, but mentally also. What we now do in mind and speech and body will determine how we will become. The different forms and idiosyncrasies of all beings and things – all worlds in fact – depend on this inexorable causality of evolutionary action, or karma. Karma is not mysterious. Karma doesn‘t mean „fate“, although in a way it occupies the place of fate. Karma means „evolution, evolutionary causality.“ (Pages 79-80) "

― Robert A.F. Thurman , The Jewel Tree of Tibet: The Enlightenment Engine of Tibetan Buddhism