"If our weapons against an enemy must be our unity, our mutual love and service, instead of roaring guns and flaming cannon, surely it is easy to provide them. Nevertheless," she added, turning to the military commander, "see that the army is made ready."

The Wizard smiled. "Well and good, if you remember, dear Princess, that an army can never be greater or stronger than the nation back of it. For every gun manufactured there must be a noble desire forged, or a high ideal realized; or else the weapons will be but a mask of courage on a weak face."

The military commander shrugged his shoulders. "I'll go and see if the gunpowder is dry," he commented, "as my contribution to yon stranger's invisible wall."

Then one by one the nobles at the command of the Princess Myrtle came forward to register each his vow of sacrifice. One said that he would write no more poetry for a year; another that he would eat no truffles for a fortnight; a third proclaimed that he would sell his jeweled sword to buy bread for the poor.

The Wizard listened and shook his head. "This layer of stones is going to be very weak," he said. "Why don't you all stop and think, while the ladies make their vows?"

The maids-of-honor crowded forward like a nose-gay of sweet-scented flowers, eager to do better than the knights in the construction of this invisible wall; for being women they were quicker than their brothers and husbands to understand what the Wizard meant. Yet they, too, were not quite clear in their minds, for one said she would wear linen instead of satin; another that she would give up perfumes for six months; another that she would read no novels for that time.

The Wizard began to look discouraged. At last a beautiful young girl came forward to register her vow. "I don't care enough about jewels and scents and satins to give them up, Sir Stranger," she said; "but I should like to win the love of the poor; so I will visit them, and be as one of them."

At this the Wizard clapped his hands. "This stone is most strong," he said. "Now, Sir Knights, return and make new vows."

Then the knights came forward. "I will be reconciled with my brother," said one. "I will build a new cottage for an aged tenant," proclaimed another; while a third, who was in love with the beautiful girl who wanted the love of the poor, said, "I will make a great supper for the hungry and will feast with them."

"Ah," cried the Wizard, "that will be, indeed, a great feast! The bread of charity chokes the receiver because the hand that gives it will not break it with him. We must have communion, not patronage; or the invisible wall will never be built."