Dangers can be caused by the use of such abstract words as "beauty", "crime" and" (1) ______ ". The danger lies (1) ______ in the fact that the word "beauty" may mean different things for different people. When we use it, we may not be (2) ______ (2) ______ what is in our mind to other people because they may have their idea about "beauty" different from (3) ______ (3) ______ (4) ______ sorts of danger arise with the word "crime". (4) ______ It is generally used to refer to acts that are forbidden by law. Anyone who (5) ______ such an act is, strictly speaking, a (5) ______ "criminal". The word "crime" is associated mainly with (6) ______ such as armed robbery and murder; and the (6) ______ common idea of the "criminal" is of a dangerous kind of man. However, a girl of seventeen who takes something off a shop shelf may be thought as a criminal by a (7) ______ man. Here, once (7) ______ again, we see how an abstract word makes a misleading impression. If "beauty" is an aesthetic abstraction, and "crime" a legal abstraction, "average" is a (8) ______ . For instance, to (8) ______ know the average height of all the people in a town is to know (9) ______ at all about any of the individuals living there. (9) ______ Therefore, abstract ideas and their expressions have to be watched with caution. We must (10) ______ before (10) ______ deciding whether we know what one is really saying.