Essays: Scientific, Political, & Speculative; Vol. 2 of 3

part induction, part deduction; and it becomes accurately quantitative

only when wholly deductive. We do not mean that the deductive and the quantitative are coextensive; for there is manifestly much deduction that is qualitative only. We mean that all quantitative prevision is reached deductively; and that induction can achieve only qualitative prevision.

Still, however, it m...