ON THE ADVISABLENESS OF IMPROVING NATURAL KNOWLEDGE*

by Thomas H. Huxley




[footnote] *A Lay Sermon delivered in St. Martin's Hall on
Sunday, January 7th, 1866, and subsequently published in
the 'Fortnightly Review'.

This time two hundred years ago--in the beginning of January,
1666--those of our forefathers who inhabited this great and ancient
city, took breath between the shocks of two fearful calamities: one not
quite past, although its fury had abated; the other to come.

Within a few yards of the very spot on which we are assembled, so the
tradition runs, that painful and deadly malady, the plague, appeared in
the latter months of 1664; and, though no new visitor, smote the people
of England, and especially of her capital, with a violence unknown
before, in the course of the following year. The hand of a master has
pictured what happened in those dismal months; and in that truest of
fictions, 'The History of the Plague Year', Defoe shows death, with
every accompaniment of pain and terror, stalking through the narrow
streets of old London, and changing their busy hum into a silence broken
only by the wailing of the mourners of fifty thousand dead; by the
woful denunciations and mad prayers of fanatics; and by the madder
yells of despairing profligates.

But about this time in 1666, the death-rate had sunk to nearly its