If you have been reading this site for some time, you will already know how important an understanding of Yin and Yang are to the practice of hokku. And you will know that speaking very broadly, Yin is cold and passive, while Yang is warm and active.
We are now entering the summer months in the Northern Hemisphere, and that means we are entering the most Yang season of the year.
We must remember, however, that Yin and Yang are relative terms. So even though summer is, overall the “Yangest” of months (well, that word seems to work in English) nonetheless it too has its stages; and here they are:
Early summer is increasing Yang and decreasing Yin, so we may say that it is a “Yin” time of summer, but note that “decreasing Yin.”
The height of summer is the most Yang time, but as you will recall, when Yang reaches its maximum, it begins to turn into its opposite; so just when summer Yang gets to its highest point, that bit of Yin begins to grow in it, which takes us to late summer.
Late summer is decreasing Yang and increasing Yin, which you can see is just the opposite of spring. So to summarize (should I say “summerize” in this case?), for convenience we can divide summer into three parts:
Early summer is growing/increasing Yang, the height of summer is maximum Yang, and late summer is decreasing Yang.
Those descriptions should call to mind the “set phrases” for the three phases of a season in hokku — “begins,” “deepens,” and “departs” (or their equivalents), that may be used for the setting of a hokku, for example:
Now, having gotten through that background, we can take a look at what all this means in practical terms for hokku.
It applies to the two kinds of harmony in hokku — harmony of similarity and harmony of contrast. Harmony of similarity means using elements in a hokku that are similar in some way. Harmony of contrast means using elements that we tend to think of as “opposites” in some way.
To make that plain, a hot cup of tea and a hot summer day are “similar,” so if we put them both in a hokku, we have harmony of similarity.
A cold block of ice and a hot summer day are contrasts/opposites, so if we put them together we have harmony of contrast.
You may be wondering why we speak of opposite or contrasting things put together in a hokku as still having harmony — why aren’t they inharmonious? It is because we tend to feel that such opposites naturally go together, therefore harmony.
Now a very important part of Yin and Yang is that each calls forth its opposite. What does that mean? It is easy to understand once I tell you about it, and you are already aware of it, though you may have never thought of it in these terms. It is simply that living things react to strong Yang in a Yin way, and they react to strong Yin in a Yang way.
That is why, on a hot summer day (Yang), you want to jump in a lake or river (Yin); similarly, on a cold winter’s night (Yin) you want a blazing fire on the hearth and a warm blanket (Yang). It also explains why people in very sunny climates (Yang) tend to develop darker skin (Yin) as protection, and why people in very cloudy climates (Yin) tend to develop lighter skin (Yang), such as is found in Ireland, for example. Of course that is something that happens over thousands of years, but it happens nonetheless.
So now you know what is behind this summer hokku by Taigi:
A midday nap;
The hand with the fan
It is the middle of a hot summer day, and that calls forth a Yin reaction, which in this case is to take a nap — to become inactive. And we see that through the gradual slowing and eventual motionlessness in sleep of the hand that was fanning the drowsy subject of the verse. It is a Yin reaction to a Yang environment.
We see a similar, though less obvious example, in a summer hokku by Buson (I translate loosely here):
Striding through a stream,
Sandals in hand.
Now that would lose its significance if we did not know it as a summer hokku, because it is the contrast between the warmth of the day and the coolness of the stream on his bare feet that gives the writer such delight.
So now you have a basic understanding of the Yin and Yang of summer, and how it applies to hokku. Of course there is more to be said on that subject, but for now I will just close with the last words from Hans Christian Andersen’s fairy tale, The Snow Queen:
Der sad de begge To Voxne og dog Børn, Børn i Hjertet, og det var Sommer, den varme, velsignede Sommer.
“There sat the two of them, grown up yet still children, children at heart, and it was summer, the warm, blessed summer.”