I wonder who it can be ?" As suddenly as if he had slapped his face into a wall, he halted in his steps.

Why should he wonder?
Why did he not read her mind?
Why did he not KNOW?
A waiter was hastening toward him.

Philip fixed his mind upon the waiter, and his eyes as well.

Mentally Philip demanded of him: "Of what are you thinking ?" There was no response.

And then, seeing an unlit cigarette hanging from Philip's lips, the waiter hastily struck a match and proffered it.