Rodney Collin (April 26, 1909–May 3, 1956) was a British writer in the area of spiritual development. His work was heavily influenced by his teacher, P. D. Ouspensky, and through him, G. I. Gurdjieff. Collin’s output includes his magnum opus The Theory of Celestial Influence as well as The Mirror of Light, The Theory of Conscious Harmony and the Theory of Eternal Life.

There is a state—like that of a small child or a shipwrecked man washed up naked on an island. In trying to answer the question: ‘Who am I?’, one may come to certain answers which produce almost the same effect.

Further Reading:
Gurdjieff on Know Thyself
Ouspensky on Know Thyself
Pogson on Know Thyself