Yet if these men have gone to the trouble to collect the wood, to sow and harvest the corn or the wheat, it is because they have passed a certain judgement on these things; without having to compare it with anything else, they judged that this wheat or that wood was able to satisfy one of their needs that it would be useful to them: 'To say that a thing has value is to say that it is, or that we esteem it, good for some use.