tu hos intueri audes, do you dare to look on these men?

    Demosthenes ad fluctus maris declamare solebat, Demosthenes used to
    declaim by the waves of the sea.

2.  A Predicate Noun or Adjective with these Infinitives is attracted into the Nominative; as,—­

    beatus esse sine virtute nemo potest, no one can be happy without
    virtue;

    Cato esse quam videri bonus malebat, Cato preferred to be good rather
    than to seem so.

Infinitive with Subject Accusative.

329.  This is used chiefly as Subject or Object but also as Predicate or Appositive.

A.  As Subject.

330.  The Infinitive with Subject Accusative (like the simple Infinitive) is used as Subject with esse and Impersonal verbs, particularly with aequum est, utile est, turpe est, fama est, spes est, fas est, nefas est, opus est, necesse est, oportet, constat, praestat, licet, etc.; as,—­

    nihil in bello oportet contemni, nothing ought to be despised in war;

    apertum est sibi quemque natura esse carum, it is manifest that by
    nature everybody is dear to himself.

B.  As Object.

331.  The Infinitive with Subject Accusative is used as Object after the following classes of verbs: 

1.  Most frequently after verbs of saying, thinking, knowing, perceiving, and the like (Verba Sentiendi et Declarandi).  This is the regular construction of Principal Clauses of Indirect Discourse.  Verbs that take this construction are, among others, the following:  sentio, audio, video, cognosco; puto, judico, spero, confido; scio, memini; dico, affirmo, nego (say that ... not), trado, narro, fateor, respondeo, scribo, promitto, glorior.  Also the phrases:  certiorem facio (inform), memoria teneo (remember), etc.

Examples:—­

    Epicurei putant cum corporibus simul animos interire, the Epicureans
    think that the soul perishes with the body;

    Thales dixit aquam esse initium rerum, Thales said that water was the
    first principle of the universe;

    Democritus negat quicquid esse sempiternum, Democritus says nothing is
    everlasting;

    spero eum venturum esse, I hope that he will come.

II.  With jubeo, order, and veto, forbid; as,—­

    Caesar milites pontem facere jussit, Caesar ordered the soldiers to
    make a bridge.

  a.  When the name of the person who is ordered or forbidden to do
  something is omitted, the Infinitive with jubeo and veto is put in the
  Passive; as, Caesar pontem fieri jussit.

III.  With patior and sino, permit, allow; as,—­

    nullo se implicari negotio passus est, he did not permit himself to be
    involved in any difficulty.