我不是为死去的总统说唱；我宁愿看到总统死去。
解释：药物之间有阴阳、子母、兄弟等配对关系，说明药物配伍的原理。
煤炭行业必须进化，否则有过时的风险。适应是生存的关键。
一个好的抽象是捕捉概念的本质方面，同时忽略无关的细节。
成功在于坚持和永不放弃。
"You yourself, as much as anybody in the entire universe, deserve your love and affection."
"We are all detectives of our own lives, piecing together clues from the past."
"The best way to predict the future is to create it."
Every decision we make today plants a seed for the forests of tomorrow.