科学的进步不是一条直线,而是一个螺旋,总是在前进,又总是回到起点。
Was vernünftig ist, das ist Wirklich; und was wirklich ist,das ist vernünftig.
做企业要有长远眼光,不能只顾眼前利益。
By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.