It is not certain whether money makes us happier, but we can undoubtedly say that we are not able to live without it. Although we come across it almost everywhere and every time, we never think about what it is, where it came from and what stood behind its development.
It is not easy to define money as it has various different functions. Firstly, according to Bernard Lietaer, an economist and one of the designers of the Euro, "money is an agreement within a community to use something as a medium of exchange".