The Relation Between Universal Nature and Oneself

Notes

1. §2.9.1Τούτων — Genitive case governed by the perfect middle infinitive `μεμνῆσθαι` (with present meaning, "to remember"). The subsequent indirect question clauses (`τίς...`) and the `ὅτι` clause (`ὅτι οὐδεὶς...`) stand in apposition to `Τούτων`, explaining its specific contents.
2. §2.9.1πῶς αὕτη πρὸς ἐκείνην ἔχουσα — `αὕτη` refers to "my nature" (`ἡ ἐμὴ [φύσις]`), and `ἐκείνην` refers to "the nature of the whole" (`ἡ τῶν ὅλων φύσις`). The participle `ἔχουσα` (along with the following `οὖσα`), with the copula (like `ἐστίν`) omitted or functioning predicatively in the indirect question, describes the state of the subject `αὕτη` ("how this is disposed toward that").
3. §2.9.1ὁποῖόν τι μέρος ὁποίου τοῦ ὅλου οὖσα — A correlative double-interrogative construction characteristic of Greek, where two interrogative adjectives `ὁποῖόν τι` ("what kind of part") and `ὁποίου` ("of what kind of whole") are used in the same clause, meaning "what kind of part of what kind of whole it is."
4. §2.9.1οὐδεὶς ὁ κωλύων — Omission of the verb `ἐστίν` ("there is no one who prevents"). The articular participle `ὁ κωλύων` functions substantively and takes the infinitives `πράσσειν τε ἀεὶ καὶ λέγειν` ("to do and to say"), meaning "one who prevents [you] from doing and saying." The accusative subject of the infinitives ("you") is omitted as it is obvious from the context (indicated by `εἶ`).