People usually aborb knowledge from either books or from experience . As a college students , I have been used to be learning knowledge from books for twelve years until I entered college ,where I have to finish works by knowledge from both books and experience .  There is a saying that the depth of knowledge to be gained from books is richer and broader than what can be learned from direct experienc .While I disaprove of this assertion partly. In my opinion knowledge which learned from experience is as the same important as knowledge learned from books . Wiseful man should emphasis on both of them .
The importance of knowledge gained from book should be acknowledged at first .The knowledge in book are the essence of former scholars and by absorbing knowledge of book , we can stand the shoulder of giants that we can see things more widely and deeply . The knowledge of book is the fundamental of a man's thought , only by understanding knowledges from the book deeply , can a man spontaneously learn knowledge from experience . For instance , an engine majored student  who has received college education can learn the practical knowledges in factory and becomes an outstanding engineers .Nevertheless , a factory apprentice who never received fundamental knowledges from books can only becomesa first-class technique person instead a engineers who know both the technique and the knowledge behind it . Therefore , knowledge gained from books is conclusive and it is the base for further knowledges gained from experience .
Although knowledge gained from books is vital and fundamental , the broadness and flexiblity of knowledge gained from exprience can not be ignored . As a student majored in machine and engine , I participated  metalworking practice in sophomore year . During the days spending in facotroy , I knew how to produce a part by lathe and what to notice during the process which I never learned from books in class . Therefore , knowledge gained from experience is a supplement to knowledge gained from books and we can solve problems in reality by them .
We should acknowledge  that a man can never get succeed only absorbing knowledge from books without practical experience , General zhao is an instance for it . Zhao kuo , a General of Zhao , was familiar with military strategies since a very young age . When he grown up and became the General of Zhao , he directed a war between Zhao and Qin in which he use knowledge only from his military books and resulted in a katabasis of Zhao in the end . Therefore , without experience from experience , people can not face the flexibility of the reality and a man who put his mind into books all day can never resolve problems in reality .
In sum , both knowledge gained from books and the one gained from experience play an important role in people's development . Without  books , we became a laboured man ;While without experience , we became a scholar who has no practical value .