This chapter follows how inquiry appears in the earlier expressions of Husserl’s transcendental project. So, if the previous chapter shows how he investigates the logical problematic of meaningful sentences and expressions, showing their foundation to be in intentional acts of consciousness, this chapter shows how he discovers the pure ego as the source of inquiry and the world as the horizon of it. There emerges a basic distinction between transcendental phenomenological inquiry and natural inquiry. Where natural inquiry leaves the source and horizon unquestioned, transcendental phenomenological inquiry proceeds under suspension of any positing—an ἐποχή—in order to understand how any position taking appears at all. I also consider his analysis of practical inquiry from his new transcendental approach, which begins to call into question the limitations of the early formulations of transcendental phenomenological inquiry.