Time is the father of truth, its mother is our mind.

God is infinite, so His universe must be too. Thus is the excellence of God magnified and the greatness of His kingdom made manifest; He is glorified not in one, but in countless suns; not in a single earth, a single world, but in a thousand thousand, I say in an infinity of worlds.

There is no absolute up or down, as Aristotle taught; no absolute position in space; but the position of a body is relative to that of other bodies. Everywhere there is incessant relative change in position throughout the universe, and the observer is always at the center of things.

That which we have lived is nothing; that which we live is a point; that which we have to live is not yet a point, but may be a point which, together, shall be and shall have been.

The soul is not the body and it may be in one body or in another, and pass from body to body.

Beautiful sights arouse feelings of love, and contrary sights bring feelings of disgrace and hate. And the emotions of the soul and spirit bring something additional to the body itself, which exists under the control of the soul and the direction of the spirit.

There is a single general space, a single vast immensity which we may freely call void: in it are unnumerable globes like this on which we live and grow, this space we declare to be infinite, since neither reason, convenience, sense-perception nor nature assign to it a limit.