References – MN 148: The Six Sets of Six 
Reflections by Ajahn Amaro and Ajahn Pasanno comparing the diversity of expression in the Six Sets of Six (MN 148) to the Mahāgosiṅga Sutta (MN 32). [Great disciples] [Buddha/Biography] // [Determination]
Sutta: SN 14.15: Students gravitate towards the personality of the teacher. [Personality]