Jason Pitre is a writer and developer whose games often focus on beliefs and the fight to change them which really sounds like Mage. Jason is also a big Mage fan and talks how to adapt his work for your table. 

Genesis of Legend Publishing - Jason's firm

RPG Design Panelcast - A podcast Jason rights on game design

M5 Hack - From our Patrick McNamara interview plus what Terry put together.

Jason's Game

• Spark Roleplaying - a game of shifting beliefs
• Spark Roleplaying on DrivethruRPG
• After the War on DrivethruRPG
• After the War in hardcopy on Indie Press Revolution
• Sig: Manual of the Primes on DrivethruRPG