Consequently, a possible application, however strongly suggested by custom, fashion, the action of one's neighbours, one's own impulse or prejudice, or what not, can be resisted, if it appear on reflection not to be really suited to the circumstances.

In short, in order to be rational and "put two and two together," one must be able to entertain two and two as distinct conceptions.

Perceptions, on the contrary, can only be compared in the lump.

Just as in the chapter on language we saw how man began by talking in holophrases, and only gradually attained to analytic, that is, separable, elements of speech, so in this chapter we have to note the strictly parallel development from confusion to distinction on the side of thought.
Savage morality, then, is not rational in the sense of analysed, but is, so to speak, impressionistic.

We might, perhaps, describe it as the expression of a collective impression.