Growth is life, and life is for ever destined to make for light.

So there was no damming up the tide of life that was rising within him--rising with every mouthful of meat he swallowed, with every breath he drew.

In the end, one day, fear and obedience were swept away by the rush of life, and the cub straddled and sprawled toward the entrance.
Unlike any other wall with which he had had experience, this wall seemed to recede from him as he approached.

No hard surface collided with the tender little nose he thrust out tentatively before him.

The substance of the wall seemed as permeable and yielding as light.