A man's usefulness depends upon his living up to his ideals in so far as he can. It is hard to fail,but it is worse never to have tried to succeed. 一个人的效用功德，取决于他有否在能力范围内尽全力实践自己的理想志向。 失败是痛苦的，更糟的是从来没有去争取成功。— 罗斯福 《Manhood》
