Ille quidem tardior: tu autem ingeniosus, sed in omni vita inconstans.
He is a little dull: while you are clever, but unstable in all your actions.
(4) Inferential.—The statement of one sentence brings in (infert) or proves the other.
Ergo, ĭgĭtur, ĭtăque ... therefore, accordingly.
‘Unus homo nobis cunctando restituit rem:
Ergo postque magisque viri nunc gloria claret.’
Ennius.
(5) Causal.
nam, namque, ĕnim, ĕtĕnim ... for.
quāpropter, quārē, quămobrem ... wherefore.
Ex.: ‘quamobrem, Quirites, celebratote illos dies cum coniugibus ac liberis vestris: nam multi saepe honores dis immortalibus iusti habiti sunt, sed profecto iustiores nunquam.’
II. SUBORDINATE.—These conjunctions attach to a sentence or clause another clause which holds (grammatically) a lower or subordinate position, qualifying the principal clause just as an adverb qualifies a verb.
Thus in ‘I will do this, if you do,’ the if clause is equivalent to the adverb conditionally.