[*] 454. The Infinitive is used as the apparent Subject with many impersonal verbs and expressions: Such are libet , licet , oportet , decet , placet , vīsum est , pudet , piget , necesse est , opus est , etc.:—
- “libet mihi cōnsīderāre ” (Quinct. 48) , it suits me to consider.
- “necesse est morī ” (Tusc. 2.2) , it is necessary to die.
- “quid attinet glōriōsē loquī nisi cōnstanter loquāre ” (Fin. 2.89) , what good does it do to talk boastfully unless you speak consistently?
- neque mē vīxisse paenitet (id. 84), I do not feel sorry to have lived.
- “ gubernāre mē taedēbat ” (Att. 2.7.4) , I was tired of being pilot.
[*] Note.--This use is a development of the Complementary Infinitive (§ 456); but the infinitives approach the subject construction and may be con veniently regarded as the subjects of the impersonals.