Joan smiled compassionately at the pleading of his eyes.
"But, Kenny," she said, holding back, "the aim of life isn't just happiness.

That might be very dreadful.

It's just happiness with the least unhappiness to others." He stared at her a little startled.

It was the sort of thing, he felt rebelliously, that he should write down in his notebook.

Well, it was no night for notebooks.