Carl Gustav Jung

Carl Gustav Jung (July 26, 1875, Kesswil – June 6, 1961, Küsnacht) was a Swiss psychiatrist, influential thinker, and founder of analytical psychology.
Jung's unique and broadly influential approach to psychology has emphasized understanding the psyche through exploring the worlds of dreams, art, mythology, world religion and philosophy. Although he was a theoretical psychologist and practicing clinician for most of his life, much of his life's work was spent exploring other realms, including Eastern and Western philosophy, alchemy, astrology, sociology, as well as literature and the arts. His most notable contributions include his concept of the psychological archetype, the collective unconscious, and his theory of synchronicity.

Synchronicity is the experience of two or more events which occur in a meaningful manner, but which are causally inexplicable to the person or persons experiencing them. The events would also have to suggest some underlying pattern in order to satisfy the definition of synchronicity.
Carl Jung coined the word to describe what he called "temporally coincident occurrences of acausal events." Jung variously described synchronicity as an "'acausal connecting principle'" (i.e. a pattern of connection that cannot be explained by direct causality), "meaningful coincidence" and "acausal parallelism". Jung introduced the concept in his 1952 paper.