Scientist, environmentalist, and a leader in sustainable ecology David Suzuki also expresses the importance of including the sacred in addressing the ecological crisis: "The way we see the world shapes the way we treat it. If a mountain is a deity, not a pile of ore; if a river is one of the veins of the land, not potential irrigation water; if a forest is a sacred grove, not timber; if other species are biological kin, not resources; or if the planet is our mother, not an opportunity—then we will treat each other with greater respect. Thus is the challenge, to look at the world from a different perspective."[22]