Why Coach/Teach?

An old man going a lone highway
Came at the evening cold and gray
To a chasm vast and deep and wide,
Through which was flowing a swollen tide.
The old man crossed in the twilight dim
That swollen stream held no fears for him
But he paused when safe on the other side
And built a bridge to span the tide.

"Old man," said a fellow pilgrim near,
"You are wasting strength with building here.
Your journey will end with the ending day;
You never again must pass this way.
You have crossed the chasm deep and wide;
Why build you the bridge at the eventide?"

The builder lifted his old gray head,
"Good friend, in the path I have come," he said,
"There follows after me today
A youth whose feet must pass this way.
This swollen stream which was naught to me
To that fair haired youth may a pitfall be.
He, too, must cross in the twilight dim.
Good friend, I am building the bridge for him."

--Anonymous