"All the others gravitate around them.
"Therefore, these same letters, these same notes, these same colors, according to their amalgamation, can change in aspect and cooperate in the production of different effects.
"The same letters can express, according to the order in which they are placed, terror or confidence, joy or grief.
"The same is true of notes and colors.
"Common sense ought then, considering these rules, to know how to analyze all the details and, having done this, to coordinate and to classify them, in order to distinguish them easily.
"Coordination and classification form an integral part of common sense."
And Yoritomo, who delights in reducing the most complex questions to examples of the rarest simplicity, says to us:
"I am supposing that one person says to another, I have just met a negro. The interlocutor, as well as he who mechanically registers this fact, without thinking, gives himself up to analysis and to coordination which always precedes synthesis.
"Without being aware of this mental action, their minds will be occupied first with the operations of perception then of classification.
"This negro was a man of a color which places him in a certain group of the human race.