Which economist suggested solely printing money to borrow and not have bonds?
I think that Stephanie Kelton is an economist who has mentioned this before. From my research, it is based on the MMT. Some practitioners of the MMT believe that the government should not issue bonds, but can instead print money. I think that I may have heard Kelton mention this a few years ago, but I am not that into the MMT. I would do some research on the MMT however, and Kelton, and that can likely lead you to the answer you're looking for.