Two verbs of attention. A tiny note — two prescriptive infinitives, each with its own plasticity. The first: συμπαρεκτείνειν τὴν νόησιν τοῖς λεγομένοις — "co-extend your thinking alongside what is said": understanding as movement beside the speech, step for step, neither lagging nor running ahead (the same discipline as in 7.4 — "follow what is said word by word" — and 6.53 — "enter into the speaker's soul"). The second: εἰσδύεσθαι τὸν TERMνοῦν — "dive with the mind" into what is happening and into the one who does it (‹τὸν› ποιοῦντα): not to skim the surface of events but to go inside — to the cause, the motive, the agent.

A geometry of understanding. The pair of verbs sets two axes of EXERCISEattention: alongside (extension beside the speech — the horizontal of listening) and into (immersion in the deed and the doer — the vertical of comprehension). Together they exhaust the mind's encounters with the world: everything it meets is either λεγόμενα or γινόμενα, words or deeds. The note reads like a memorandum for a ruler whose day consists of reports and decisions: to listen so that thought covers what is said without a gap, and to look so that the mind reaches the bottom of the act. The discipline is assent.