I believe the song you're looking for is titled 'Keep Young at Heart' written by Glenn Close (yes, 'the' Glenn Close') and Kathe Green.
I want to be strong, to be strong as the land around me
I want a heart that's as wide as the sky!
I want a spirit like a moving mountain stream
I want to look people straight in the eye.
Walking alone beneath a canopy of cloud
Feeling like a stranger in the midst of a crowd
I know that something great is calling me aloud
I know that I must choose.
The crowd is crying 'cause there's hunder and hate
If we care it's not too late
A loving, laughing world we'll be able to create
Underneath an endless sky.