成为英雄的最大障碍是怀疑自己是否会证明自己是个傻瓜；真正的英雄主义是抵制这种怀疑；最深刻的智慧是知道何时应该抵制它，何时应该服从它。
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when to be obeyed.
A poem begins in delight and ends in wisdom.
代数分析是所有科学中最广泛和最确定的；它是唯一具有不变和可靠方法的一门科学。
SINCERITY. Use no hurtful deceit; think innocently and justly, and, if you speak, speak accordingly.
诚恳：不要恶意欺骗人，思想纯洁公正，讲话也是如此。
我们都正走向天堂之路，也通往地狱之门。
个人对自己信念的信心主要取决于他们能够对自己所见所闻讲述的故事的质量，即使他们所见甚少。
