quoniam Miltiades dicere non posset, verba pro eo fecit Tisagoras,
    since Miltiades could not speak, Tisagoras spoke for him. (The reason
    of Tisagoras.)

    noctu ambulabat Themistocles, quod somnum capere non posset,
    Themistocles used to walk at night because (as he said) he couldn’t
    sleep.

  a.  Verbs of thinking and saying often stand in the Subjunctive in
  causal clauses as though the act of thinking or saying, and not the
  contents of the thought or language, constituted the reason.  Thus:—­

Bellovaci suum numerum non compleverunt quod se suo nomine cum Romanis bellum gesturos dicerent, the Bellovaci did not furnish their complement, because they said they were going to wage war with the Romans on their own account.

b.  Non quod, non quo (by attraction for non eo quod), non quia, not that, not because; and non quod non, non quo non, non quin, not that ... not; not because ... not; not but that, are usually employed merely to introduce a hypothetical reason, and hence take the Subjunctive; as,—­

    id feci, non quod vos hanc defensionem desiderare arbitrarer, sed ut
    omnes intellegerent, this I did, not because I thought you needed this
    defense, but that all might perceive;

Crasso commendationem non sum pollicitus, non quin eam valituram apud te arbitrarer, sed egere mihi commendatione non videbatur, I did not promise a recommendation to Crassus, not that I did not think it would have weight with you, but because he did not seem to me to need recommendation.

  c.  But clauses introduced by non quod, non quia take the Indicative if
  they state a fact, even though that fact is denied to be the reason for
  something; as,—­

    hoc ita sentio, non quia sum ipse augur, sed quia sic existimare nos
    est necesse, this I think, not because I am myself an augur (which I
    really am), but because it is necessary for us to think so.

2.  Cum causal regularly takes the Subjunctive; as,—­

    quae cum ita sint, since this is so;

    cum sis mortalis, quae mortalia sunt, cura, since you are mortal, care
    for what is mortal.

  a.  Note the phrase cum praesertim (praesertim cum), especially since;
  as,—­

    Haeduos accusat, praesertim cum eorum precibus adductus bellum
    susceperit, he blamed the Haedui, especially since he had undertaken
    the war at their entreaties.

3.  Quando (less frequent than the other causal particles) governs the Indicative; as,—­

    id omitto, quando vobis ita placet, I pass over that, since you so
    wish.

Temporal Clauses introduced by Postquam, Ut, Ubi, Simul ac, etc.