Karma is a Sanskrit word, literally meaning "action"; as all actions are effects flowing from preceding causes, and as each effect becomes a cause of future effects, this idea of cause and effect is an essential part of the idea of action, and the word action, or karma, is therefore used for causation, or for the unbroken linked series of causes and effects that make up all human activity. Hence the phrase is sometimes used of an event, "This is my karma," i.e., "This event is the effect of a cause set going by me in the past." No one life is isolated! It is the child of all the lives before it, the parent of all the lives that follow it, in the total aggregate of the lives that make up the continuing existence of the individual .
There is no such thing as "chance" or as "accident"; every event is linked to a preceding cause, to a following effect; all thoughts, deeds, circumstances are causally related to the past and will causally influence the future; as our ignorance shrouds from our vision alike the past and the future, events often appear to us to come suddenly from the void, to be "accidental," but this appearance is illusory and is due entirely to our lack of knowledge. Just as the savage, ignorant of the laws of the physical universe, regards physical events as uncaused, and the results of unknown physical laws as "miracles"; so do many, ignorant of moral and mental laws, regard moral and mental events as uncaused, and the results of unknown moral and mental laws as good and bad "luck."