Annie Besant 
Four Great Religions Four Lectures Delivered on the Twenty-First Anniversary of the Theosophical Society at Adyar, Madras [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The following lectures do not pretend to be any thing more than popular expositions of four great faiths, and are intended for the ordinary reader rather than for the student. Delivered to audiences composed almost entirely of Hindus, with only a sprinkling of Zoroastrians and Christians, they rather take for granted a knowledge of Sanskrit terms; so notes have been added where obscurity might arise from their use. They are intended to help members of each of the four religions to recog nize the value and beauty of the three faiths which are not their own, and to demonstrate their under lying unity. In the lecture on Buddhism I had es pecially in mind the misconceptions which shut the Lord Buddha out from the hearts of His country men, and strove to remove them by quotations from the received Scriptures containing the authoritative records of His own words. For indeed I know of no greater service that could be rendered to religion than to draw together again these sundered faiths.