In order that there may be a connection between the faculty of judgment and that of deduction, it is essential that nothing should be allowed to interpose itself between these two phases of the argument.
Harmony between all judgments is founded on common sense, but it is practical common sense, which indicates this harmony with precision.
It is also practical common sense which serves as a guide to the orator who wishes to impress his audience.
He will endeavor first to choose a subject which will interest those who listen to him.
In this endeavor he ought, above all, to consult opportunity.
And, as we have remarked on many occasions, the Shogun expresses theories on this subject, to which the people of the twentieth century could not give too much earnest consideration.
"There are," said he, "social questions, as, for example, dress and custom.
"With time, opinions change, as do forms and manners, and this is quite reasonable.
"The progress of science by ameliorating the general conditions of existence, introduces a need created by civilization which rejects barbarous customs; the mentality of a warrior is not that of an agriculturist; the man who thinks about making his possessions productive has not the same inclinations as he whose life is devoted to conquest, and the sweetness of living in serenity, by modifying the aspirations, metamorphoses all things.
"In order to lead attention in the direction which is governed by reason, it is indispensable for the orator that he should expound a subject whose interpretation will satisfy the demand of opportunity, which influences every brain.