Liam Dieghan

Liam Dieghan was a male Human philosopher in the late 21st or early 22nd century. He was the founder of Neo-Transcendentalism, a movement which advocated a return to a simpler lifestyle, with minimal technology and an emphasis on nature. 

The Dieghanists, a group which formed on planet Mariposa in 2367, was named for Liam Dieghan.