We are accustomed to think of the universality of Shakespeare as not the least of his glories. No other poet has given so many-sided an expression to human nature, or rendered so many passions and moods with such an appropriate variety of style, sentiment, and accent. If, therefore, we were asked to select one monument of human civilization that should survive to some future age, or be transported to another planet to bear witness to the inhabitants there of what we have been upon earth, we should probably choose the works of Shakespeare. In them we recognize the truest portrait and best memorial of man. Yet the archæologists of that future age, or the cosmographers of that other part of the heavens, after conscientious study of our Shakespearian autobiography, would misconceive our life in one important respect. They would hardly understand that man had had a religion. There are, indeed, numerous exclamations and invocations in Shakespeare which we, who have other means of information, know to be evidences of current religious ideas. Shakespeare adopts these, as he adopts the rest of his vocabulary, from the society about him. But he seldom or never gives them their original value. When Iago says "'_sblood_" a commentator might add explanations which should involve the whole philosophy of Christian devotion; but this Christian sentiment is not in Iago's mind, nor in Shakespeare's, any more than the virtues of Heracles and his twelve labours are in the mind of every slave and pander that cries "_hercule"_ in the pages of Plautus and Terence. Oaths are the fossils of piety. The geologist recognizes in them the relics of a once active devotion, but they are now only counters and pebbles tossed about in the unconscious play of expression. The lighter and more constant their use, the less their meaning.