"What's your name?"

"Ralph."

The fat boy waited to be asked his name in turn but this proffer of acquaintance was not made; the fair boy called Ralph smiled vaguely, stood up, and began to make his way once more toward the lagoon. The fat boy hung steadily at his shoulder.

"I expect there's a lot more of us scattered about. You haven't seen any others, have you?"

Ralph shook his head and increased his speed. Then he tripped over a branch and came down with a crash.

The fat boy stood by him, breathing hard.

"My auntie told me not to run," he explained, "on account of my asthma."

"Ass-mar?"

"That's right. Can't catch me breath. I was the only boy in our school what had asthma," said the fat boy with a touch of pride. "And I've been wearing specs since I was three."

Q. Ralph is portrayed as a cool and somewhat aloof character. Underline the brief phrase in the paragraph which illustrates this characteristic.