To those who live in the narrow circle of human interests and human feelings, there ever exists, unheeded, almost unnoticed, before their very eyes, the most humbling proofs of their own comparative insignificance in the scale of creation, which, in the midst of their admitted mastery over the earth and all it contains, it would be well for them to consider, if they would obtain just views of what they are and what they were intended to be.

Let them exercise their sublime and boasted reason, I said to myself, in endeavoring to comprehend infinity in any thing, and we will note the result! If it be in space, we shall find them setting bounds to their illimitable void, until ashamed of the feebleness of their first effort, it is renewed, again and again, only to furnish new proofs of the insufficiency of all of earth, even to bring within the compass of their imaginations truths that all their experiments, inductions, evidence and revelations compel them to admit.

Autobiography of a Pocket-Handkerchief