The Mental body is the vehicle of thought and is one of the subtle bodies of a human being. To plant our feet firmly on the thought-world, and reach upwards to the very abstractions of thought will surely bring us to the threshold of a world higher and purer, not only in degree, but also in kind. Through those abstractions we shall rise to the world of the spirit, and draw appreciably nearer to the God-consciousness from which we now feel and know ourselves to be temporarily exiled. 

This book describes the anatomy, nature, and functions, of the mental body based on the first-hand  testimony of noted clairvoyants like C.W.Leadbeater and Annie Besant. It is the third in a series by Col Arthur E. Powell, attempting to provide a condensed synthesis of theosophical knowledge to all lovers of esoteric lore. The others in the series are The Etheric Body, The Astral Body, The Causal Body, and the Solar System.