Abstract
This article examines three aporias (difficult problems) encountered by Zeng Tian-Zong (1910-2007) in his notion ＂Knowledge of Ideal of Truth＂ or ＂Philosophical Knowledge＂, and proposes a possible answer to these problems based on the clues and guarantees he provides. On the reading proposed here, while these problems turn out to not be genuine difficulties, examination of these aporias in his knowledge of the ideal of truth, better elucidates the nature of his ＂Knowledge of Ideal of Truth＂ as well as the content and direction of his philosophical system of Aletheiology.