The Sierra Club Foundation – John Muir ChapterAldo Leopold quote: We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect. works to raise awareness about threats—to our land and water—from irresponsible mining in Wisconsin. The Sierra Club supporters object to laws written by out-of-state mining companies, and they support the fundamental right of citizens and Wisconsin’s Indian tribes to participate in the mine permitting process.