Postridie scriptor idem ad scholam venit et de arte sua narrat; discipulis autem maxime placet quod de navi, de velo, et de ancora tam clare scribit.

Postridie is an adverb meaning on the next day or the next day. It does not change form for case, number, or gender.

A learner may expect something more like in the next day, but Latin often uses a simple adverb where English uses a whole phrase. So Postridie scriptor idem ad scholam venit means The next day the same writer comes to the school.

Both word orders are possible in Latin. Because Latin is highly inflected, word order is more flexible than in English.

Here scriptor idem means the same writer. The adjective/pronoun idem agrees with scriptor in case, number, and gender:

• scriptor = nominative singular masculine
• idem = nominative singular masculine

Putting idem after the noun is perfectly normal. It can slightly emphasize identification: the writer, the same one as before.

It can function as either, depending on context. In this sentence it works adjectivally, modifying scriptor.

Idem, eadem, idem means the same. It is formed from is, ea, id plus a suffix, so some of its forms can look a little unusual. Here you just need to recognize idem as agreeing with scriptor: the same writer.

The preposition ad takes the accusative and usually means to or toward.

So:

• ad scholam = to the school

This is a standard motion-toward construction:

• venit ad scholam = he comes to school / to the school

These are present-tense forms:

• venit = comes
• narrat = tells / narrates
• scribit = writes

Latin often uses the present tense in storytelling even when English might prefer a past tense. This is sometimes called the historical present. It makes the narrative feel more vivid and immediate.

So although the forms are present, the broader context might still be a story about past events.

De means about or concerning and takes the ablative:

• de arte = about the art / about his craft

Arte is ablative singular of ars, artis.

Sua means his own here, agreeing with arte:

• arte = feminine singular ablative
• sua = feminine singular ablative

Latin uses the reflexive possessive suus, sua, suum when the possessor is the subject of the clause. Since the writer is the subject of narrat, sua refers back to him:

• de arte sua narrat = he speaks about his own craft

The verb placere works differently from English to please or to be pleasing.

In Latin:

• the thing that pleases is the grammatical subject
• the person pleased is put in the dative

So:

• discipulis placet = it pleases the students or more naturally the students like it

Here discipulis is dative plural: to the students.

Because the subject of placet is not discipulis. The subject is the whole quod clause:

quod de navi, de velo, et de ancora tam clare scribit

That whole clause is treated as a single idea, so Latin uses singular placet:

• It pleases the students that he writes so clearly about the ship, the sail, and the anchor.

If the subject were plural, then you would expect placent instead.

Autem usually means however, but, or moreover. It is a postpositive word, which means it tends to come second in its clause, not first.

So:

• discipulis autem maxime placet = the students, however, are especially pleased / however, it especially pleases the students

A common beginner question is why it is not the first word. That is just normal Latin behavior for autem.

Here quod introduces a clause that functions as the subject of placet, so it means that:

• maxime placet quod ... scribit
• what especially pleases them is that he writes ...

Sometimes quod can mean because, but here that would make less sense. The structure with placet strongly suggests that.

Because de takes the ablative case.

So we get:

• de navi = about the ship
• de velo = about the sail
• de ancora = about the anchor

These are ablative singular forms:

• navis, navis → navi
• velum, veli → velo
• ancora, ancorae → ancora

This is a very common Latin pattern: de + ablative for about/concerning.

Clare is an adverb meaning clearly.
Tam means so or so much.

Together:

• tam clare = so clearly

It strengthens the adverb. The idea is not just that he writes clearly, but that he writes so clearly.

Yes, Latin could sometimes use one de with several nouns, especially if they are clearly joined together. But repeating the preposition is also very normal and often clearer.

So de navi, de velo, et de ancora is perfectly natural. The repetition can give a neat, deliberate rhythm:

• about the ship, about the sail, and about the anchor

The semicolon is just a modern punctuation choice to separate two closely connected parts of the sentence:

1. Postridie scriptor idem ad scholam venit et de arte sua narrat
2. discipulis autem maxime placet quod ... scribit

Latin manuscripts in antiquity did not use punctuation the way modern printed texts do. So the semicolon is there to help the reader, not because Latin grammar requires that exact mark.

Yes. The sentence first says that the writer comes and talks about his craft, and then it explains what the students especially like: that he writes so clearly about nautical things.

So the shift is meaningful:

• narrat = he talks / tells
• scribit = he writes

The second clause focuses specifically on his skill as a writer. That is what pleases the students most.