CHAPTER 1.X.
Of that which is signified by the colours white and blue.
The white therefore signifieth joy, solace, and gladness, and that not at random, but upon just and very good grounds: which you may perceive to be true, if laying aside all prejudicate affections, you will but give ear to what presently I shall expound unto you.
Aristotle saith that, supposing two things contrary in their kind, as good and evil, virtue and vice, heat and cold, white and black, pleasure and pain, joy and grief,--and so of others,--if you couple them in such manner that the contrary of one kind may agree in reason with the contrary of the other, it must follow by consequence that the other contrary must answer to the remanent opposite to that wherewith it is conferred.

As, for example, virtue and vice are contrary in one kind, so are good and evil.

If one of the contraries of the first kind be consonant to one of those of the second, as virtue and goodness, for it is clear that virtue is good, so shall the other two contraries, which are evil and vice, have the same connection, for vice is evil.
This logical rule being understood, take these two contraries, joy and sadness; then these other two, white and black, for they are physically contrary.

If so be, then, that black do signify grief, by good reason then should white import joy.

Nor is this signification instituted by human imposition, but by the universal consent of the world received, which philosophers call Jus Gentium, the Law of Nations, or an uncontrollable right of force in all countries whatsoever.