Just as “science,” in the sense we use the word today, didn’t quite exist in Shakespeare’s day, atheism, too, was absent in its modern, Dawkins-like form. The word “atheism” begins to crop up in English writing in the 16th century, almost always as a put-down; the term was used as a derogatory label, bestowed on anyone imagined to hold heretical views of one kind or another.
Even so, the seeds of unbelief had been planted. In A Short History of Atheism, Gavin Hyman points to the years from 1540 to 1630 as a period in which “the notion of a worldview that was entirely outside a theistic framework was ... gradually becoming conceivable.” As it happens, Shakespeare’s life falls wholly within this transitional period (he was born 450 years ago); and, just as his works hint at the beginnings of science, so, too, do they hint at the possibility of unbelief.