On the subject of Mind vs matter

Here is an interesting excerpt from Miscellaneous Writings by Mary Baker Eddy, in the article titled "Vainglory". It provides an unequivocal statement as to the importance of understanding that Mind, not matter, is the basis of all being.

​"Who is it that understands, unmistakably, a fraction of the actual Science of Mind-healing?
"It is he who has fairly proven his knowledge on a Christian, mental, scientific basis; who has made his choice between matter and Mind, and proven the divine Mind to be the only physician. These are self-evident propositions: That man can only be Christianized through Mind; that without Mind the body is without action; that Science is a law of divine Mind. The conclusion follows that the correct Mind-healing is the proper means of Christianity, and is Science."