it was a poem I saw as graffiti and was about the value of money compared with other thing and it was apparently written by a chief of the american native indians
I would like to know what the poem was and who wrote it

When all the trees have been cut down,
When all the animals have been hunted,
When all the waters are polluted,
When all the air is unsafe to breathe,
Only then will you discover you cannot eat money.

~ Cree Prophecy