Infinitive (not in indirect discourse).—The tenses of the infinitive (without ἄν) not in indirect discourse have no time of themselves and express only the stage of the action; their (relative) time depends on the context and is that of the leading verb (present, past, or future). The infinitive may have the article (2025 ff.).
a. Present (continuance): οὐδὲ βουλεύεσθαι ἔτι ὥρᾱ, ἀλλὰ βεβουλεῦσθαι
it is time no longer to be making up one's mind, but to have it made up Cr. 46a.
b. Aorist (simple occurrence): τοῦ πιεῖν ἐπιθῡμίᾱ
the desire of obtaining drink 7.84, ἤρξατο γενέσθαι began to be 1. 103, but ἤρχετο γίγνεσθαι 3. 18 (the tense of γίγνομαι depends on that of ἄρχομαι; not ἤρξατο γίγνεσθαι), δεῖ τοὺς ὑπὲρ αὐτοῦ λέγοντας μῑσῆσαι (ingressive) one must conceive an aversion for those who speak in his behalf 9.53.
c. Perfect (completion with permanent result): see a. Often of certainty of action.
d. Future.—When the context shows that stress is laid on the idea of futurity, the future infinitive, referring to future time relative to the main verb, is sometimes used instead of the present or aorist: οὐκ ἀποκωλῡ́σειν δυνατοὶ ὄντες
not being able to prevent 3.28, πολλοῦ δέω κατ᾽ ἐμαυτοῦ ἐρεῖν
I am far from intending to speak to my own disadvantage A. 37b. On the future infinitive with μέλλω see 1959.
N. 1.—The action set forth by a dependent present or aorist infinitive (without ἄν) not in indirect discourse has no time except that which is implied by the context. With verbs signifying to advise or to command, and when the infinitive expresses purpose, the reference is to future time. Usually the action of the present and aorist is coincident with or antecedent to that of the main verb. The action of an aorist infinitive with the article and a subject is not always relatively past. The perfect (without ἄν) has no time apart from the context; its action is usually antecedent.
N. 2.—On the use of the present and aorist with verbs of promising, etc., see 1868; with μέλλω, see 1959.
N. 3.—Observe that verbs denoting continuance (as μένω remain) often appear in the aorist, while verbs of transitory action (as ῑ̔έναι send, hurl) often appear in the present.
N. 4.—Present and aorist occasionally occur in close conjunction without any great difference in meaning, as προσήκει ῡ̔μῖν τούτου καταψηφίζεσθαι . . ., δεῖ ῡ̔μᾶς θάνατον αὐτοῦ καταψηφίσασθαι
it is fitting that you vote against him, it is necessary that you pass a vote of death against him 13.69; cp. ναυμαχῆσαι and ναυμαχεῖν 2.83, βασανιστὴς γίγνεσθαι and γενέσθαι 1.10, 1. 11.