This is a song written by Stan Rogers. It’s also the name of a musical that celebrates his work.
Here’s just the chorus:
Put your life on the line,
Give your hand and pledge your time
To the love whose lips inflame you like some ancient and golden wine;
And to all it’s a start
In fulfilling greatest needs in part,
For in whatever we dream of what we some day want to be
It’s a matter of heart.