The Force is Logic, in spite of what you might think.  Its rules might seem like emotion, but they are merely the hard and unfeeling laws if the universe unlocked for those with the proper discipline.  So it was no surprise when Spock of Vulcan was called upon to join the Order, regardless of his age.  He had calculated and assessed and finally bent the great binding Force to his will, the will of Logic.

Head is a Reaction Spock.  The lightsaber is a yellow repro of SW ROTJ Luke Skywalker.  The rest is SW OB1 Kenobi.