This text explores the relationship between thinking as a process and the object of thought. The author defines thinking as consciousness organized in a rational manner, beginning when the subject becomes aware of their own cognitive activity. Special attention is given to realities accessible exclusively through thought rather than sensory perception. In this context, the text critically examines the ontological status of such objects and the role of memory in the cognitive process. While memory of sensory perceptions is often unreliable and vague, thinking can identify and fix entities within its own structure characterized by absolute precision and immutability, such as geometric shapes. This phenomenon, first reflected upon by ancient Greek thinkers, highlights the ability of thought to relate to itself and establish an internal order that does not succumb to temporal change. The text thus elucidates the transition from mere awareness to the systematic grasping of ideal forms through intellectual performance.