Capital is defined as the sum total of nonhuman assets that can be owned and exchanged on some market.

This concept of capital-rebuilding is so important that it may be desirable to digress for a moment. In the broadest sense of the word, capital means the sum total of the valuable things possessed by the individuals of a society, excluding "claims," that is, mere titles to property. The word is used to mean both the inventory of these valuable things; the houses, factories, machines, livestock, stocks of raw materials, and goods in all stages of completion; and also to mean the sum of the values of these things. It should generally be clear from the context which of these two meanings is intended.

By capital we understand everything that, from the special use by the individual, or from its being placed at the disposal of others, produces a revenue or rent. We do not inquire into its origin, or ask whether it has been acquired by inheritance or by labour.

'Capital' is not what capital is called, it is what its name is called.

The term 'capital' has two quite different meanings in economics: a sum of money, and a collection of machinery.

Capital creates space-time.

Capital means money. To raise money, apply your specific knowledge with accountability and show resulting good judgment.

Capital is but a form of labor, and its distinction from labor is in reality but a subdivision, just as the division of labor into skilled and unskilled would be.

In its literal meaning, capitalism means rule by capital, more specifically rule by the owners of capital for their exclusive private benefit.

Capital in the hands of a national government forms a part of the gross national capital.

Capital is money: Capital is commodities. […] For the movement, in the course of which it adds surplus-value, is its own movement, its expansion, therefore, is automatic expansion. Because it is value, it has acquired the occult quality of being able to add value to itself. It brings forth living offspring, or, at the least, lays golden eggs.

The 'dominion of capital' is an accomplished teleological catastrophe, robot rebellion, or shoggothic insurgency, through which intensively escalating instrumentality has inverted all natural purposes into a monstrous reign of the tool.

Capital simply allows us to expend labour in advance.

Mesopotamian merchants spread their commercial institutions far and wide, into Western Asia, Egypt and Europe. The ancient inhabitants of Babylonia used the word qaqqadum, 'head', in the sense of 'principal'... our English word 'capital' (via Latin caput [head]) reflects ancient Mesoptamian usage. ...our financial system, that reckons with interest on principal, harks back to the land between the Tigris and Euphrates rivers.