The progress of science is not a straight line, but a series of zigzags, often retracing steps to gain a better foothold.
科学的进步不是一条直线,而是一系列曲折,常常需要回溯步骤以获得更好的立足点。
最成功的公司是那些倾听客户声音的公司。
再说,义就是匡正的意思,不能以下正上,必须是以上正下。 
"The most successful companies are those that put their customers first."