A day is worth a dollar

A dollar's worth a piece of gum

A piece of gum is worth half an hour

A half hour's worth half a dollar

Fifty cent is worth a postage stamp

A stamp is worth a letter

A letter's worth a smile

Or a tear

Or a laugh

A smile

A tear

Or a laugh

Is worth a heart

A heart is worth a life

A life is worth the pain

The pain is worth living.