 This section is organized as follows. It begins by summarizing some of the main contributions early phenomenologists delivered on the general theory of intentionality  (§2.1).  In a subsequent step, it zooms in on intersubjective forms of intentionality by discussing social, empathic, and collective acts  (§2.2).  Phenomenological insights into the philosophy of mind shape a multi-faceted and articulated view about mentality and its position in the natural and social world, which anticipates many contemporary positions on these and related issues.