Complex sentence: Thelema (Koine Greek:) is primarily a philosophical law, which has been adopted as a central tenet by some religious organisations, and was developed by Aleister Crowley, the early 20th-century British writer and ceremonial magician.
Split into simpler sentences: Thelema (Koine Greek:) is primarily a philosophical law, which has been adopted as a central tenet by some religious organisations. The law of Thelema was developed by Aleister Crowley, the early 20th-century British writer and ceremonial magician.