A Course in Meditation – Developing Purity of Mind (Lesson 6.3) A Course in Meditation – Developing Purity of Mind (Lesson 6.3) By Masters of Meditation | June 12, 2022 Please ensure you are logged in. See your membership status and upgrade options to ensure complete site-wide access. Or take the 7-Day Challenge: 'Maximize Your Wellness' to access these Weekly Messages. Username or E-mail Password Remember Me Forgot Password