This volume explores the nature of consciousness in the context of the theosophical principles of atma, buddhi and manas. It is part of a series of writings, collected under the banner 'Modern Theosophy', re-presenting important texts drawn from the history of the theosophical movement together with texts from contemporary authors and innovative thinkers. Pablo Sender was born in Argentina in 1975. He trained originally as a molecular biologist and holds a doctorate in Biological Sciences. He was originally drawn to theosophy because he felt, 'it presented a far wider scope of knowledge' than studying science alone. H.P. Blavatsky was a Russian occultist and author. She founded the Theosophical Society on 17 November 1875 in