John Muir Button

The mountains are calling and I must go.

and while we are at it... 

The clearest way into the Universe is through a forest wilderness.

John Muir was an environmental philosopher, author and naturalist. He founded the Sierra Club,  U.S. forest conservationist advocate and was largely responsible for the establishing protection around the Sequoia and Yosemite National Parks. Thank goodness! "The mountains are calling and I must go."