One of the most arresting phrases in the inspired writings of Mary Baker Eddy, the Discoverer and Founder of Christian Science, is to be found on page 209 of the Christian Science textbook, "Science and Health with Key to the Scriptures," where she speaks of "the infinite calculus of Spirit." The words challenge the thinker to enter into a new and hitherto little explored realm of thought. To the spiritually-minded they open the very gates of scientific harmony, giving entrance to the new heaven and new earth visioned by St. John on Patmos: "And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.... And there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away."
In infinite Spirit all must be spiritual, therefore perfect and eternal. The calculus of Spirit recognizes no postulate save that of one cause, one Mind, one substance. Hence this spiritual calculus deals not with the so-called mind that is searching for Truth outside itself, but with the Mind that is Truth, self-contained and self-sustained; not with mere energy or blind, warring forces, but with the intelligence that is omnipotence—one power, one will, altogether good, to which there can be no opposition, no resistance, no defiance. It deals not with inert, inanimate matter, but with conscious, changeless facts, the divine qualities and ideas of Mind; not with speculations, uncertainties, or inconsistencies, but with the immaculate logic of perfect Principle; in other words, with omniscience. This omniscience—all Science—includes all law, self-enforcing, from which there can be no deviation, and to which there can be no disobedience.
The calculus of Spirit deals not with human invention, but with revelation; not with time or space, but with omnipresence, in which is all real existence; which eternally is, and which unfolds its own being without birth or death, knowing neither time, chance, distance, nor vacuum. Because of his purity and goodness Jesus was able to apprehend these three great qualities of Spirit—omnipotence, omniscience, omnipresence; and this apprehension enabled him to heal the sick and the sinning, to walk on the water, feed the multitude, and raise the dead. It was his understanding of Spirit's omnipresence which enabled him, without traversing space, to be instantly at the place in which it was needful for him to be, in order to bless mankind and prove the infinitude of good. This understanding of omnipresence is the only real annihilator of the belief in time and space.
