Mottainai is a Japanese word meaning, roughly, "what a waste!" It's oftened used as an exclamation. Buddhist monks often use the expression to teach the importance of respecting what you have, whether it's something simple or sacred. There has been a revival of the expression, notably by Kenyan environmentalist Wangari Maathai. Maathai used the term to push forward her desire to encourage greater reduction of consumption, reusing of that which we already have, recycling of things no longer needed, and repair of things that could once again be useful. Maathai said, "we should all use limited resources effectively and share them fairly if we are to avert wars arising from disputes over natural resources."