He was beginning to recover himself.
"I have been working very hard," he admitted.
"But why ?" she murmured.

"You are young.

Surely there is plenty of time?
Is it because the thoughts have come to you and you dared not daily with them?
Or is it because you are like every one else--in such a terrible hurry to become rich and famous ?" He shook his head.
"It is not that," he said.

"I have no thought of either.

Alas!" he added, looking into her eyes, "I lack the great incentive!" "Then why is it ?" she whispered.
"You must not ask our young friend too many questions," the professor interrupted, a trifle impatiently.