Das Kapital, I think, is very difficult to read, and for me, it was not very influential.
Thomas PikettyFor far too long economists have sought to define themselves in terms of their supposedly scientific methods. In fact, those methods rely on an immoderate use of mathematical models, which are frequently no more than an excuse for occupying the terrain and masking the vacuity of the content.
Thomas PikettyI certainly agree that capital is not a one-dimensional object, and that the return on capital takes very different forms for different assets or different people.
Thomas Piketty