Non-Duality Authors

The Non-Duality authors whom I've read so far are:

• Byron Katie
• Jean Klein
• Francis Lucille
• Rupert Spira
• Eckhart Tolle
• Nathan Gill
• "Sailor" Bob Adamson
• Robert Scheinfeld (I consider his Non-Duality phase to have begun with his Being In Truth online course)

I've found the writings of all of these authors to be supportive.

However, speaking for myself, I find Byron Katie's material the most accessible.

Later edited to add Lao Tzu, author of the Tao Te Ching. I keep Stephen Mitchell's translation on my bedside table, and continually re-read it.