It is my deliberate opinion that the one essential requisite of human welfare in all ways is scientific knowledge of human nature.

It is my deliberate opinion that the one essential requisite of human welfare in all ways is scientific knowledge of human nature.

我经过深思熟虑后认为，人类福祉的一个基本条件是对人性的科学认识。

-- Harriet Martineau 马蒂诺