I think we all learned this at the same time. Here's how I've remembered it:

I'm off to find that journey's end
And I may not pass this way again,
So let's go run the ridges mister
Let's go find the rainbow sister
Come along stranger, come along friend
I may not pass this way again.

Let's live the day until its end
For we may not pass this way again,
So let's go build the bridges mister
Let's go pick the flowers sister
Come along stranger, come along friend
We may not pass this way again.


This one's up there with "Don Gato", "Kookaburra", and "Marching to Pretoria" for songs that stick in your head forever.