The so-called Bemerkungen über die Philosophie der Psychologie correspond to two typescripts (TS 229 and TS 232 in the von Wright’s catalogue). The first one, published here, was written during the fall of 1947 ; it is devoted to the analysis of « psychological concepts » (aspect-seeing, expectation, hope, feeling, emotion, intention, meaning, and so on). This meticulous and very rich analysis is supported by a radical criticism of psychologism, and it underlines a complete reassessment of the concept of will on which the Tractatus’s solipsism was grounded.