[84] For the sake of simplicity, we shall follow general usage and speak
here and in the following of annual production, though this term,
strictly speaking, applies in general to agriculture only. The periods
of industrial production, or of the turnover of capitals, need not
coincide with calendar years.
[85] The distinction between intellectual and material labour need not
involve special categories of the population in a planned society, based
on common ownership of the means of production. It will always find
expression in the existence of a certain number of spiritual leaders who
must be materially maintained. The same individuals may exercise these
various functions at different times.
[86] _Capital_, vol. ii, p. 459.
[87] _Capital_, vol. ii, pp. 544-7. Cf. also p. 202 on the necessity of
enlarged reproduction under the aspect of a reserve fund.
[88] Marx's italics.
[89] _Theorien über den Mehrwert_, vol. ii, part 2, p. 248.
_CHAPTER V_