The differentiation of goals and intentions constitutes the basis of economicity. As such, the strong argument which turns methodological individualism into a principle supports the context of the double differentiation on intentions and on goals. Without this differentiation the meaning of the term “individual” becomes a non-sense. Furthermore, the free choice of objectives and of the means for reaching them is the only formula in which individual interest is treated in a non-conflictual manner, as long as free choice is independent in space and time and not treated as part of a group.