Pietro Archiati takes up the challenge to illuminate and expand upon our understanding of love, this most fundamental and unique quality of human existence.
Apart from the rainbows, lightning and northern lights in the title, the author discusses the blue of the sky, the colours of twilight and the dewdrop, and halos and other light phenomena.
Meyer takes a symptomatological approach to the evolution of Rudolf Steiner's thinking, pinpointing specific moments in his biography, whilst making numerous links to contemporary issues.