100% correct. People in many years gone by before money, traded say a half a sheep for say 2 sacks of wheat. Or something similiar.Money, in all it's essence, is just a practical means to barter. like Acidrazor said, without it, we would eventually find other valuables to trade with, as has been done for many thousands of years
If we agree that money can speak any language,and that it makes the world go round...What then is life without money???Even the battering system was informed by a capitalist drive,where it was sometimes not fair.Money gave birth to the concept of currency...This is philosophy,questioning the existence and absence...Money can be regarded as a kind of 'language' we have developed with each other.
If you are alone by yourself, money is meaningless. However if there are other people around you who agree with the arbitrary value money has you can use it to exchange services and goods, which in todays world of 6 billion people is entirely neccessary to keep everyone alive and the modern world as we know it running.
Infact today it is incredibly difficult to live without money because there are so few places left where one has enough space to simply live off the land without coming into contact with anyone else.