The main peculiarity which distinguishes man from other animals is the means of his support - the power which he possesses of very greatly increasing these means.
Thomas MalthusIn prosperous times the mercantile classes often realize fortunes, which go far towards securing them against the future; but unfortunately the working classes, though they share in the general prosperity, do not share in it so largely as in the general adversity.
Thomas MalthusThe passion between the sexes has appeared in every age to be so nearly the same, that it may always be considered, in algebraic language as a given quantity.
Thomas MalthusIn 1860, sixty-three per cent of the couples married in Great Britain had families of four or more children; in 1925 only twenty per cent had more than four.
Thomas Malthus