The whites came to this land for a fresh start and to escape the tyranny of their masters, just as the freemen had fled theirs. But the ideals they held up for themselves, they denied others.

永远不要低估小而持续的改进的力量，随着时间的推移，它们会带来巨大的成果。

Listen to your customers more than you speak to them - they'll tell you exactly what you need to know.

化学的进步以新元素的发现及其性质的测定为标志。