126 APPLIED PHYSIOLOGY 



teach the cells of the forehead how to think. The cells 

 of the rest of the brain may know how to feel and see 

 and hear, and how to make the body move, and may have 

 wonderful things stored in memory, but if the forehead 

 cells do not know how to think, the mind cannot make 

 use of the memories. We say that such a person is a 

 fool, even though he has great knowledge. In school it 

 is of little account how many things are stored away in 

 the memory, for we can get memories anywhere. But in 

 school we should learn how to use memories, and how to 

 tell which ones are best and right for the work we wish 

 to do. 



240. How tp think. The only way to teach the cells 

 under the forehead is to make them work at one thing at 

 a time until they can do it. When a boy wants to get his 

 lesson upon the reason for the temperature at the North 

 Pole, he cannot do it if he thinks a minute of the North 

 Pole, and then a minute about snowballing, and then 

 another minute of baseball, and then goes at the North 

 Pole again. But this is the way boys and girls naturally 

 do, and only a few succeed in training their foreheads to 

 think of one thing at a time. To learn to think well re- 

 quires great effort, kept up for a long time. A man is 

 educated when he can use all the power of his mind in 

 thinking of one thing at a time. If a boy thinks of kites 

 when he is studying geography, he must get back to his 

 geography as quickly as he can. He will like his kites 

 all the more when he gets his lesson, for he will be more 

 likely to put his whole mind upon them. 



241. Speech. The highest act of the mind is speech. 

 The lips and tongue can be moved when ordered by the 

 brain cells above the ears, but if they move so as to pro- 

 duce speech, the orders must be sent by a special set of 



