If we like to take "labour" as a collective name for all forms of human effort, we can of course do so; but in that case we must find other differential names for the different forces of effort individually.

To give them all the same name is not to explain them.

It is to tie them all up in a parcel.
[2] If this fact requires any further exemplification, we can find one on a large scale in the pages of Marx himself.

According to him the first appreciable capitalistic movement--the first leaping of the modern system in the womb--took place in the English cloth trade about four hundred years ago.

Now, if capitalism were merely, as according to Marx it is, a passive monopoly by some men of implements which have been produced by others, the pioneers of capitalism in the reign of Henry VIII.