People often ask whether it is good for young people to travel out into the world, and they argue about it.But to put it another way-is tourism good for people?Perhaps there would be no difference.The effect of the misuse of books is to kill good learning.People think they understand what they read in books, and learning is effortless.Excessive reading can only create a self-important ignorant person.Human beings have never read so many books in the past century as in the present age, but they have never been so uneducated as in this age.No European country prints so many historical and travel books as France, but no country is so ignorant of the spirit and customs of other countries.Too many books make us ignore the book of the world.