Henry Thomas Hamblin 
Within you is the power 

Within You Is Power is a self-help book by Henry Thomas Hamblin. Man possesses, if only he knew it, unlimited Power. This Power is of the Spirit, therefore, it is invincible. It is not the power of ordinary life, or the finite will, or the human mind. It transcends them, because, being spiritual, it is of a higher order than the physical or even the mental. This Power lies dormant and is hidden in man until he is sufficiently evolved and deployed to be entrusted with its use.