Promises are scary things. To keep them means relinquishing some of our freedom;to break them means losing some of our integrity. Though we have to make them today, promises are all about tomorrow--and the only thing we know for sure about tomorrow is that we don't know anything for sure! And it's not just the outer world that changes in unforeseeable ways;it's you yourself. 每种新的体验--新的责任, 新的交往--都会使你的想法改变!
单词提示：
relinquishing v. 放弃 ; integrity n. 正直 ; unforeseeable 不可预见的
答案： Every new experience--new responsibilities, new contacts--changes your perspective.
本句节选自《The Power of a Promise》