The Law of Love Enshrined

From Bahaikipedia

Two brothers, one stationed in mathematics and the other in the humanities, construct an insider's exposition of a core concept of the Kitáb-i-Aqdas of Bahá'u'lláh: all the fabric of the universe is a distinct and exact expression of the divine will, a perfect articulation of God's love... This diptych is a well-written and thickly textured introduction to the premier Bahá'í holy book. Perhaps the most startling gem is a manifestation of the thesis of the book, in this case a profound and rigorous, scientific proof of the existence of God. This is essential reading for those standing at the interface of science and religion, or for those who would stand there in peace.