The only limits we have are the ones we set for ourselves.
石油的真正成本不仅仅是每桶的价格,还包括环境和社会影响。
解析:保持纯洁朴实的本性,减少私欲杂念,抛弃圣智礼法的浮文,才能免于忧患。
The most successful societies are those that have been able to balance the need for a strong state with the need for individual freedom.