Wikipedia:
René Guénon (November 15, 1886 – January 7, 1951), also known as Shaykh `Abd al-Wahid Yahya, was a French author and intellectual who remains an influential figure in the domain of metaphysics, having written on topics ranging from metaphysics, "sacred science" and traditional studies to symbolism and initiation.Some Books by René Guénon':
The Crisis of the Modern World (1927).
The Multiple States of the Being (1932).
Perspectives on Initiation (1946).
The Foundations of René Guénon's Thought
