A Shakespeare Quote Challenge

Ok, everybody, time for me to ask some help of you once again.  My company's doing a "green initiative" project, where we brand our product as environmentally friendly and then try to milk the marketing for all it's worth.  (Cut us some slack, it's not like every company in the US isn't doing the exact same thing right now :)).  Anyway, we're putting up a new web site decorated with a variety of quotes on the subject, ranging from saving the environment to general sorts of pro-activism comments (all those variations on "the worst you can do is, thinking you can do little, to do nothing.")  I said, "Can I throw some Shakespeare in there?" and they said "Absolutely."

So that's the challenge.  I'm looking for Shakespeare quotes relative to the green/environmental movement.  Can be either about the value of nature (and protecting it), or the larger picture of "its better to do something than nothing."  I am doing my own searching, not trying to get folks to do my homework for me :), but thought I'd see if anybody out there's got some that come to mind.  My Bartlett's is at home, otherwise I'd start there.