This little book is in the public domain and can be acquired for free in various locations. The words, “As a man thinketh in his heart, so is he,” appear within the first few pages and establish the theme of the book, one well-supported by Scripture.

“Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.” — Matthew 15:11

It’s a slim volume with short, clear, easy-to-read chapters, but it is packed with truth and a glimpse into the operations of God’s law, mitigation, and purification of the mind and heart.

“Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is. And every man that hath this hope in him purifieth himself, even as he is pure.” — I John 3:2-3

From the Cover:

Long before Norman Vincent Peale’s The Power of Positive Thinking, or Joshua Liebman’s Peace of Mind, James Allen wrote this spare yet profound statement on the power of positive thought. Written in the infancy of the twentieth century, his title drawn from the Biblical book of Proverbs, As a Man Thinketh is a boldly optimistic, remarkably contemporary work that has influenced and brought success to millions of readers.

The continued power of this classic inspirational work lies in its practicality, in the immediacy of its personal message, and in its keen embodiment of Eastern and Western influences. In a series of short, pointed essays, Allen outlines the power of thought, its influence on character, on circumstance, on health. He demonstrates that thought needs purpose in order to achieve and reminds us to give credence to our “Visions and Ideals.” Allen’s message is that we are the architects of our destiny and that our tools lie deep within the mine of our souls.

— Megan Payne