Say's Law represents an economic truth that rests on:

• The perpetual cycle of production and consumption.

  The perpetual cycle of production and consumption.
• Only an accounting framework for measuring national income.

  Only an accounting framework for measuring national income.
• An 'ex-ante' conceptualization of production and consumption.

  An 'ex-ante' conceptualization of production and consumption.
• Self-sustaining equilibriating actions of economic agents.