Unless you have a mind of your own
How could you ever have known
If you have not walked in another’s shoes
Sit down, be kind, and listen to their views
Unless you have lost
Then you know the cost
If you have climbed the mountain
Then you know the pain
Unless you have tasted the sweet nectar of love
Then you know the bitter essence thereof
If you understand one
Then two is better than none
Patricia Gale
http://www.poemhunter.com/poem/if-unless/