We must balance short-term energy needs with long-term environmental goals.
唯一受过教育的人是学会了如何学习和改变的人。
要消除社会地位低下引起的焦虑,旅行可能是一个好方法,通过实际的旅行或在艺术作品中神游,去感受世界的广阔无垠。
True forest stewardship means leaving some trees - and some profits - for those who come after us.
占据有利位置,更容易成功。