Complex sentence: Meyerism is a fictional movement in the series founded by the character Dr. Stephen Meyer who on October 28,1974, was said to have literally climbed a ladder of burning light to receive the message of universal truth.
Split into simpler sentences: Meyerism is a fictional movement in the series founded by Dr. Stephen Meyer. In the show's mythology, on October 28,1974, Meyer literally climbed a ladder of burning light to receive the message of universal truth.