Curuppumullage Jinarajadasa (16 December 1875, Sri Lanka–18 June 1953, United States) was a Sri Lankan author, occultist, freemason and theosophist. The fourth president of the Theosophical Society. Jinarajadasa was one of the world's foremost Theosophical authors, having published more than 50 books and more than 1600 articles in periodicals during his life. In his lecture, The Problem of Religion And Philosophy, he stressed the need to serve others, saying “We have a perennial need of God, of understanding the mystery of the I . . . When the heart and brain are ready, the hand will be guided by a Divine Architect to build according to His Plan. Each of you must help in this day to come. Not the smallest child but can help in some tiny action, not the poorest now who cannot heap up wealth of hope for that future. For within us is the Light of the World and the Power of the World –– if only we knew how to find. But the doors of all the treasure-houses will open if we know the right mantra to repeat, the open sesame of this newer day. It is the new word of power: ‘Brother, thou art I'.