If you don"t learn to think when you are young , you may never learn .(Thomas Edison , American inventor )
如果你年轻时就没有学会思考,那么就永远学不会思考。(美国发明家 爱迪生. T.)
Natural abilities are like natural plants that need pruning by study.(Francis Bacon , British philosopher )
天生的才干如同天生的植物一样,需要靠学习来修剪。(英国哲学家 培根. F.)