The desire to communicate thought to another has a tendency to raise the key. To illustrate: if we are addressing an audience in a small room, we shall speak in a moderately low key. If the auditorium is large, the key will be higher. If we are speaking in the open air, the chances are that we shall use a key considerably above that of ordinary conversation. On the other hand, when one is communing with himself, the absence of desire to reach others removes the tension, and in consequence the pitch is low. It is well to bear in mind that all soliloquies are not read in low key. Soliloquies are often full of uncontrolled passion, in which case the principle first laid down would apply, and the pitch would be high, according to the degree of tension. What has been said in this paragraph we may sum up in a few words: those states in which there is strong desire to communicate (objective states) are manifested in high key; while the introspective (subjective) states find expression in the lower keys. Henry V., inciting his soldiers to attack the enemy’s fortifications, says:
Once more unto the breach, dear friends, once more;
Or close the wall up with our English dead!
In peace, there’s nothing so becomes a man,
As modest stillness, and humility:
But when the blast of war blows in our ears,
Then imitate the action of the tiger;
Stiffen the sinews, summon up the blood,
Disguise fair nature with hard-favor’d rage:
Then lend the eye a terrible aspect;