Modern economic approaches of empathy and sympathy aim at adding an altruistic dimension to the standard economic decision theory. The purpose of the introduction of another regarding dimension, in addition to the sole personal interest, is to try to explain prosocial preferences or behaviours. In this article, we show how and why the economic literature tries to grasp those concepts, but in a way that is very far from the original Smithian sympathy developed in his Theory of Moral Sentiments (TSM). We argue that, by remaining in the framework of methodological individualism and instrumental rationality, economic approaches, particularly in the field of experimental and behavioural economics, tend to reduce and to intrumentalize the concepts of sympathy and empathy. Such approaches seem to us not consistent with the Smithian social philosophy of human nature and interpersonal relationships
