How does this compare with his position on birth control?

Malthus condemned "artificial and unnatural modes of checking
population," not only on the grounds of their "immorality," but also on
"their tendency to remove a necessary stimulus to industry" (Malthus
1817: iii, p. 393).  By the sixth edition, the good parson was so
emphatic on this point that he even seemed to prefer prostitution to
birth control (Malthus 1826: ii, pp. 158 and 175; see also Winch 1965,
p. 59).

Michael Perelman