precisely quantified,it has become customary to pay people by the hour,week,or year.In our culture TIME IS MONEY in many ways:tele-phone message units,hourly wages,hotel room rates,yearly budgets,interest on loans,and paying your debt to society by "serving time. These practices are relatively new in the history of the human race,and by no means do they exist in all cultures.They have arisen in modern industrialized societies and structure our basic everyday activities in a very profound way.Corresponding to the fact that we act as if time is a valuable commodity-a limited resource,even money-we conceive of time that way.Thus we understand and experience time as the kind of thing that can be spent, wasted,budgeted,invested wisely or poorly,saved,or squandered. TIME IS MONEY,TIME IS A LIMITED RESOURCE,and TIME IS A VALUABLE COMMODITY are all metaphorical concepts. They are metaphorical since we are using our everyday experiences with money,limited resources,and valuable (9) .Ittmnodities to conceptualize time.This isn't a necessary Why for human beings to conceptualize time;it is tied to our vtllture.There are cultures where time is none of these things. The metaphorical concepts TIME IS MONEY,TIME IS A NI'sot)CE,and TIME IS A VALUABLE COMMODITY form a Mingle system based on subcategorization,since in our soci-Mly money is a limited resource and limited resources are Valuable commodities.These subcategorization relation-Nhlps characterize entailment relationships between the Metaphors.TIME IS MONEY entails that TIME IS A LIMITED tld5OURCE,which entails that TIME IS A VALUABLE COMMOUITY. We are adopting the practice of using the most specific Metaphorical concept,in this case TIME IS MONEY,to characterize the entire system.Of the expressions listed tinder the TIME IS MONEY metaphor,some refer specifically to money (spend,invest,budget,profitably,cost), others to limited resources (use,use up,have enough of,run out of),and still others to valuable commodities (have,give,lose,/hank you for).This is an example of the way in which metaphorical entailments can characterize a coherent system of metaphorical concepts and a corresponding coherent system of metaphorical expressions for those concepts. (10)precisely quantified, it has become customary to pay people by the hour, week, or year. In our culture TIME IS MONEY in many ways: tele-phone message units, hourly wages, hotel room rates, yearly budgets, interest on loans, and paying your debt to society by "serving time." These practices are relatively new in the history of the human race, and by no means do they exist in all cultures. They have arisen in modern industrialized societies and structure our basic everyday activities in a very profound way. Corresponding to the fact that we act as if time is a valuable commodity—a limited resource, even money—we conceive of time that way. Thus we understand and experience time as the kind of thing that can be spent, wasted, budgeted, invested wisely or poorly, saved, or squandered. TIME IS MONEY, TIME IS A LIMITED RESOURCE, and TIME IS A VALUABLE COMMODITY are all metaphorical concepts. They are metaphorical since we are using our everyday experiences with money, limited resources, and valuable ((9)) •lttmnodities to conceptualize time. This isn't a necessary Why for human beings to conceptualize time; it is tied to our vtllture. There are cultures where time is none of these things. The metaphorical concepts TIME IS MONEY, TIME IS A Nlf sot)CE, and TIME IS A VALUABLE COMMODITY form a Mingle system based on subcategorization, since in our soci-Mly money is a limited resource and limited resources are Valuable commodities. These subcategorization relation-Nhlps characterize entailment relationships between the Metaphors. TIME IS MONEY entails that TIME IS A LIMITED tltl5OURCE, which entails that TIME IS A VALUABLE COMMOUITY. We are adopting the practice of using the most specific Metaphorical concept, in this case TIME IS MONEY, to characterize the entire system. Of the expressions listed tinder the TIME IS MONEY metaphor, some refer specifically to money (spend, invest, budget, profitably, cost), others to limited resources (use, use up, have enough of, run out of), and still others to valuable commodities (have, give, lose, /hank you for). This is an example of the way in which metaphorical entailments can characterize a coherent system of metaphorical concepts and a corresponding coherent system of metaphorical expressions for those concepts. ((10))