But there were other forces at work in the cub, the greatest of which was growth. Instinct and law demanded of him obedience. But growth demanded disobedience. His mother and fear impelled him to keep away from the white wall. Growth is life, and life is forever 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. And as condition, in his eyes, had the seeming of form, so he entered into what had been wall to him and bathed in the substance that composed it.