The Science of Mind, by Ernest Shurtleff Holmes [1926], at sacred-texts.com
We must realize the Perfect Universe if we wish to embody the greatest good. If the Universe were not Perfect It could not exist for a single moment. It is self-evident that we live in a Perfect Universe; and, if so, then everything in It must also be perfect.
The Truth is Indivisible and Whole. God is Complete and Perfect. A Perfect Cause must produce a Perfect Effect. Disregarding all evidence to the contrary, the student of Truth will maintain that he lives in a Perfect Universe and among
perfect people; he will regulate his thinking to meet this necessity and will refuse to believe in its opposite. At first he may appear to be weak; but as time goes on, he will prove to Itself that his position is a correct one; for that which appears imperfect will begin to slip from his experience.
To daily meditate on the Perfect Life and to daily embody the Great Ideal is the way to sure salvation; this is a royal road to freedom and is happiness to the soul of man. We cannot afford to believe in imperfection for a single instant. Let us learn to look as God must look, with a Perfect Vision; let us seek the Good and the True and believe in them with our whole heart; let us say daily to our inner selves: "Perfect God within me; Perfect Life within me, Which is God; Perfect Being within me, Which is God, come forth into expression through me and become that which I am; lead me into the paths of perfection and cause me to see only the Good."
By this practice, the soul will become illumined and will acquaint itself with God and be at peace. "Be ye therefore perfect, even as your Father Which is in heaven is Perfect." 104
286:104 Matt 5:48.