Infinite space and infinite time are the two primary ideas. We formulize them thus: add body to body and sphere to sphere, until the imagination wearies; and still there will remain beyond, a void, empty, unoccupied SPACE, limitless, because it is void. Add event to event in continuous succession, forever and forever, and there will still remain, before and after, a TIME in which there was and will be no event, and also endless because it too is void.

Thus these two ideas of the boundlessness of space and the endlessness of time seem to involve the ideas that matter and events are limited and finite. We cannot conceive of an infinity of worlds or of events; but only of an indefinite number of each; for, as we struggle to conceive of their infinity, the thought ever occurs in despite of all our efforts—there must be space in which there are no worlds; there must have been time when there were no events.

We cannot conceive how, if this earth moves millions of millions of miles a million times repeated, it is still in the centre of space; nor how, if we lived millions of millions of ages and centuries, we should still be in the centre of eternity—with still as much space on one side as on the other; with still as much time before us as behind; for that seems to say that the world has not moved nor we lived at all.

Nor can we comprehend how an infinite series of worlds, added together, is no larger than an infinite series of atoms; or an infinite series of centuries no longer than an infinite series of seconds; both being alike infinite, and therefore one series containing no more nor fewer units than the other.

Nor have we the capacity to form in ourselves any idea of that which is immaterial. We use the word, but it conveys to us only the idea of the absence and negation of materiality; which vanishing, Space and Time alone, infinite and boundless, seem to us to be left.

We cannot form any conception of an effect without a cause. We cannot but believe, indeed we know, that, how far soever we may have to run back along the chain of effects and causes, it cannot be infinite; but we must come at last to something which is not an effect, but the first cause: and yet the fact is literally beyond our comprehension. The mind refuses to grasp the idea of self-existence, of existence without a beginning. As well expect the hair that grows upon our head to understand the nature and immortality of the soul.

It does not need to go so far in search of mysteries; nor have we any right to disbelieve or doubt the existence of a Great First Cause, itself no effect, because we cannot comprehend it; because the words we use do not even express it to us adequately.

We rub a needle for a little while, on a dark, inert mass of iron ore, that had lain idle in the earth for many centuries. Something is thereby communicated to the steel—we term it a virtue, a power, or a quality—and then we balance it upon a pivot; and, lo! drawn by some invisible, mysterious Power, one pole of the needle turns to the North, and there the same Power keeps the same pole for days and years; will keep it there, perhaps, as long as the world lasts, carry the needle where you will, and no matter what seas or mountains intervene between it and the North Pole of the world. And this Power, thus acting, and indicating to the mariner his course over the trackless ocean, when the stars shine not for many days, saves vessels from shipwreck, families from distress, and those from sudden death on whose lives the fate of nations and the peace of the world depend. But for it, Napoleon might never have reached the ports of France on his return from Egypt, nor Nelson lived to fight and win at Trafalgar. Men call this Power Magnetism, and then complacently think that they have explained it all; and yet they have but given a new name to an unknown thing, to hide their ignorance. What is this wonderful Power? It is a real, actual, active Power: that we know and see. But what its essence is, or how it acts, we do not know, any more than we know the essence or the mode of action of the Creative Thought and Word of God.

And again, what is that which we term galvanism and electricity,—which, evolved by the action of a little acid on two metals, aided by a magnet, circles the earth in a second, sending from land to land the Thoughts that govern the transactions of individuals and nations? The mind has formed no notion of matter, that will include it; and no name that we can give it, helps us to understand its essence and its being. It is a Power, like Thought and the Will. We know no more.

What is this power of gravitation that makes everything upon the earth tend to the centre? How does it reach out its invisible hands toward the erratic meteor-stones, arrest them in their swift course, and draw them down to the earth's bosom? It is a power. We know no more.