Postea mater domi codicem aperit, titulum legit, et dicit se nihil clarius vidisse.

This is a very common feature of Latin narrative called the historical present.

Latin often uses the present tense to tell a story more vividly, as if the events are happening before your eyes:

• aperit = she opens
• legit = she reads
• dicit = she says

Even though the broader context may clearly be past, Latin can still use the present for dramatic effect. English sometimes does this too in informal storytelling: So she opens the book, reads the title, and says...

So these are grammatically present forms, but in context they may be translated as past.

Postea means afterward, later, or then.

It helps move the story forward in time. Placing it first is very natural, since Latin often puts time words early in the sentence for orientation:

• Postea = Afterward / Then
• mater = the mother

So Postea mater... means Afterward the mother...

Domi is a special locative form meaning at home.

Latin has a small group of words, especially names of cities/towns and a few common place words like domus, that can use a special case called the locative to express place where.

So:

• domi = at home
• in domo can also mean in the house/home, but it is less idiomatic if you simply mean at home

A native English speaker often expects a preposition, but Latin sometimes does without one.

Because codicem is the direct object of aperit.

The verb aperire means to open, and the thing being opened takes the accusative:

• mater codicem aperit = the mother opens the book/manuscript

Here the dictionary form is codex, but the accusative singular is codicem.

So:

• nominative: codex
• accusative: codicem

For the same reason: it is the direct object of legit.

• legere = to read
• the thing read goes in the accusative

So:

• titulum legit = she reads the title

Again, English does not show the object with a special ending, but Latin does.

Se is a reflexive pronoun, and in this construction it normally refers back to the subject of the main verb.

The main verb here is dicit:

• mater ... dicit = the mother says
• se ... vidisse = that she had seen / has seen herself

So se refers back to mater, not to some other female person.

This is a standard Latin pattern in indirect statement:

• dicit se vidisse = she says that she saw / has seen

If Latin wanted to refer to some other woman, it would usually use eam instead of se.

Because Latin very commonly uses the accusative-and-infinitive construction for indirect statement.

After verbs of saying, thinking, knowing, hearing, and perceiving, Latin often uses:

• an accusative subject
• plus an infinitive

So:

• dicit se vidisse literally = she says herself to have seen
• natural English = she says that she has seen or she said that she had seen

This is one of the most important Latin constructions to learn.

Structure here:

• dicit = main verb
• se = subject of the indirect statement
• vidisse = infinitive
• nihil clarius = object/complement within the indirect statement

Vidisse is the perfect active infinitive of videre.

It shows that the seeing happened before the saying. In other words:

• first, she saw something
• then, she says that she saw nothing clearer than that

So:

• dicit se nihil clarius vidisse = she says that she has seen nothing clearer or, in past narrative, = she said that she had seen nothing clearer

The perfect infinitive is very common in indirect statement when the action of the infinitive is earlier than the main verb.

Nihil clarius means nothing clearer.

Here is the grammar:

• nihil = nothing, a neuter word
• clarius = neuter singular comparative of clarus

Since clarius goes with nihil, it is neuter too.

So the phrase works as:

• nihil clarius = nothing clearer

In context:

• se nihil clarius vidisse = that she had seen nothing clearer

English might sometimes say nothing more clear, but Latin uses the comparative adjective naturally here.

Yes. The comparative clarius implies than this/than that/than what she has just read or seen, even if Latin does not state the second term explicitly.

Latin often leaves the comparison understood from context. So the idea is something like:

• she says that she has seen nothing clearer
• that is, nothing clearer than this

The unstated comparison is very natural in both Latin and English.

The basic dictionary form is lego, legere.

But legit can potentially come from two different tenses depending on context:

• present: legit = he/she reads
• perfect: legit = he/she read

In this sentence, because it appears with other clear present forms (aperit, dicit) in a narrative sequence, it is best taken as present historical:

• titulum legit = she reads the title

So context is what tells you which tense is meant.

Latin word order is more flexible because the case endings show the grammatical roles.

English relies heavily on order:

• the mother opens the book

Latin can move words around more freely because:

• mater is nominative, so it is the subject
• codicem is accusative, so it is the object

This sentence has a very natural Latin flow:

• Postea gives the time
• mater domi sets the subject and place
• codicem aperit, titulum legit gives a neat sequence of actions
• et dicit... leads into the indirect statement

So the order is not random; it is shaped by emphasis and style rather than by strict subject-verb-object rules.

Codex originally means a block of wood, then a writing tablet, and later a book in codex form—that is, pages bound together rather than a scroll.

In many beginner contexts it is translated simply as book or manuscript.

So codicem aperit most naturally means:

• she opens the book or
• she opens the manuscript

The exact nuance depends on the broader context, but grammatically it behaves just like any other masculine third-declension noun.

Yes. Because Latin word order is flexible, domi could be placed elsewhere without changing the core meaning.

For example:

• Postea mater domi codicem aperit
• Postea mater codicem domi aperit

Both still mean Afterward the mother opens the book at home.

However, the given placement is very natural. Putting domi right after mater nicely sets the scene: the mother, at home, opens...

Because Latin prefers the reflexive pronoun se in this situation.

Instead of saying something like dicit matrem vidisse, which would sound as if she were talking about the mother as a separate person, Latin uses:

• dicit se vidisse = she says that she saw

This makes it clear that the subject of the indirect statement is the same as the subject of the main verb.

So se avoids awkward repetition and clearly signals reflexive reference.