Edouard (Edward) Salim Michael, 1921-2006, may not be widely known throughout the US, but, his book The Law of Attention: Nada Yoga and the Way of Inner Vigilance, had a significant influence on Theravada monk Ajahn Sumedho. www.amazon.com/Law-Attention-Nada-Inner-...edward+salim+michael

You can read his bio here: www.meditation-presence.com/en/biography

Here he speaks of awakening, meditation, and renunciation: