I have always thought ahead of my own time. That just means I think logically, but without building any of my own thoughts on the accumulated, supposedly logical, dogma of others. I didn't learn to think ahead of my time, I was just born to think that way.
My claim to be a great spirit thinker is, of course, subjective and can be evaluated by others based on their own consideration of examples of my so-called great spirit thinking. I offer the following as what I believe to be clear examples of my thinking in the great spirit tradition.