There has been a new generalization which, applied to new particulars, yields results more in harmony with past particulars, and, what is still more important, more consistent with the social welfare. This work of modification is gradual. It goes on inch by inch. Its effects must be measured by decades and even centuries. Thus measured, they are seen to have behind them the power and the pressure of the moving glacier. 引自 Lecture 1 Introduction. The Method of Philosophy
1. The directive forces of a principle:
(1) logical progression: the rule of analogy or the method of philosophy;
(2) historical development: the method of evolution;
(3) the customs of the community: the method of tradition;
(4) justice, morals, and social welfare, the mores of the day: method of sociology.