I think this comment can be taken as a brief summary of the long article.
The article includes this passage, which mirrors this idea:
>It is by selling, I repeat, and by selling alone—whether it be by the sale of property or the sale of the use of our talents or of our land—that we acquire the credits by which we liberate ourselves from debt, and it is by his selling power that a prudent banker estimates his client’s value as a debtor.
And underlying it all is a simple 'proof of burn' concept. Every person has a finite amount of time available to them. When you put some of that 'out of use' by serving others you gain credit from others.
The monetary system is essentially a notarised system of time credits which we exchange between ourselves.