Latin Reference — Vol. VIII: The Time Machine

The volume where the verb system becomes complete. So far the shelf holds three tenses: the present (Vol. IV), the perfect in its third-person stone forms (Vol. V), and the imperfect (Vol. VII). Latin has six, and the remaining three — future, pluperfect, future perfect — come cheaply once you see the architecture, because the whole system is built from just two stems and the personal endings you already own.

First, a pleasing fact about the word tense itself: it has nothing to do with tension. It comes, via Old French tens, from tempus — time. Every tense is literally a time. This volume is therefore about tempus in both senses, and it ends with the largest vocabulary delivery in the library so far, because verbs are where Latin hides most of its English.

The two-stem architecture

Every indicative tense is one of two stems, plus a signature, plus the endings from Vol. IV:

Three tenses per stem; you already know two of the first family and one of the second. The rest of this volume fills the three gaps.

Principal parts — a verb's four-word biography

Dictionaries list Latin verbs as four forms, and the habit repays learning, because those four forms hand you every stem the verb will ever use:

mittō, mittere, mīsī, missum — send

The fourth part is the etymological jackpot: missum → mission, missile, transmit. English is largely built from Latin fourth principal parts, which is why learning them quadruple feels like extra work for about a week and then starts paying interest.

How perfect stems are made — the five families

The perfect stem has to be learned per verb, but the verbs sort into families, and spotting the family halves the memory load:

Reduplication is the fossil in the drawer: an ancient Indo-European way of marking the past, shared with Greek, surviving in Latin only in a handful of old, common verbs. Cucurrī — "I ran" — with the stem tripping over its own feet, which feels about right.

The vocabulary bank — twenty verbs, four parts each

The core working set. Fourth column is the payoff — cover it and guess before reading:

The future — one tense, two machines

The awkward truth first: Latin builds the future two different ways depending on conjugation, and the split must simply be learned.

1st and 2nd conjugations take the signature -bi- (bō, bis, bit — the "bo-bi-bu" tense):

3rd and 4th conjugations instead shift vowel: -am for I, then -ē- throughout:

Two traps, both about lookalikes. First: monēs (you warn, present) against regēs (you will rule, future) — the ē means different things in different families, so the conjugation must be identified before the tense can be. The infinitive's vowel (Vol. IV) is the referee. Second, for much later: regam will turn out to share its shape with the subjunctive. A problem for a future volume — appropriately.

And sum, whose future is small and everywhere:

Aside — Ovid on friendship. Dōnec eris fēlīx, multōs numerābis amīcōs — "as long as you are fortunate, you will count many friends" — written from exile on the Black Sea, where Ovid had discovered the second half of the couplet: cloudy times, and you'll be alone. Two futures (eris, numerābis), one of the most quoted bitter lines in Latin, and the tense doing the emotional work: friendship projected forward, conditionally.

The perfect, completed

Vol. V gave the endings and the third-person stone forms; here is the full machine — perfect stem + its own unique set of endings (the only tense with endings all its own):

English translates it two ways — I loved or I have loved — and Latin declines to distinguish; context carries it. Sum's perfect stem is fu-: fuī, fuistī, fuit — I was / have been.

Aside — the most famous perfects in the world. After a five-day campaign in 47 BC, Caesar reported a victory to Rome in three words: vēnī, vīdī, vīcī.

The pluperfect — the past's own past

Perfect stem + what is transparently the imperfect of sum (Vol. VII's eram) bolted on. Meaning: had done — an action already complete before some other past moment.

Mīlitēs pontem fēcerant antequam hostēs vēnērunt. — The soldiers had built the bridge before the enemy came. Two past events, and the pluperfect files them in order: bridge first, enemy second. (New words: pōns, pontis m. — bridge → pontoon, and the pontifex, Rome's chief priest, literally a bridge-builder; hostis — enemy → hostile; antequam — before.)

The future perfect — the tense of law and curses

Perfect stem + sum's future (erō, eris, erit… with third plural -erint). Meaning: will have done — complete at a point in the future.

English barely uses its equivalent; Latin loved this tense, and nowhere more than in law and curses — the two genres that address hypothetical completed deeds. The Twelve Tables' archaic quī malum carmen incantāssit (Vol. VI.a) is essentially old dress for incantāverit: whoever shall have chanted an evil spell. The law doesn't punish intending; it punishes having done — and it has a tense that says precisely that.

The Roman timestamp

The future perfect also exposes a habit of mind. Where English says if you see the temple, you'll make an offering, Latin timestamps properly:

Sī templum vīderis, dōnum dabis. — If you [will first have] seen the temple, you will give a gift.

The seeing must be complete before the giving happens, so Latin puts it in the future perfect. English hides the sequence inside a vague present; Latin files events in their actual order, like a language designed by lawyers — which, on the evidence, it partly was.

The showpiece

All of it together, in a sentence Silvianus would have recognised:

Quī ānulum meum cēperit, eum deae dōnābō.

The system entire

One verb, six tenses, third person, stone-compatible:

That is the whole indicative, and there will never be a seventh. Everything later — subjunctives, infinitives of every tense, participles — is built from the same two stems, which is why the principal parts were worth the trouble.

Time words — when, exactly

A tense volume earns a bank of time vocabulary. Adverbs first — caseless, changeless, learn-once words:

And the nouns of time:

Worked sentences — the machine running

New vocabulary and new tenses together; mechanics named, per house custom:

The drill

Three passes, train-sized. One: run mittō through all six tenses, third person, aloud — mittit, mittēbat, mittet, mīsit, mīserat, mīserit — until the two-stem seam is audible. Two: take any Vol. IV present-tense sentence and time-shift it through the whole system, six versions, one breath each. Three: the timestamp drill — build three sī… (future perfect), … (future) sentences of your own on the Silvianus pattern; if the logic of vīderis before dabis feels natural rather than fussy, the Roman habit of mind has taken.

Aside — the tense that worked. Horace closed his third book of Odes, around 23 BC, with a boast built from this volume's two halves: exēgī monumentum aere perennius — I have finished a monument more lasting than bronze (perfect: done, filed) — and then, switching tense to reach forward: nōn omnis moriar — I shall not wholly die. A perfect and a future, wagering that the poems would outlast the empire's metalwork. The bronze is largely gone; you have just read the future tense in question, still running, two thousand and fifty years on. As advertisements for grammar go, it has the advantage of having been checked.