Questions & Answers about Sit haec lectio brevis, sed nullum vocabulum neglegatur.
Because this sentence is giving a kind of wish, exhortation, or command, not just stating a fact.
Latin often uses the present subjunctive for this, especially in the third person:
- sit = let it be / may it be
- neglegatur = let it be neglected / in context with nullum, let no word be neglected
This is called the jussive subjunctive. English usually translates it with let ... or sometimes may ....
So:
- haec lectio brevis est = this lesson is brief
- sit haec lectio brevis = let this lesson be brief
Haec means this and is a demonstrative adjective here.
It agrees with lectio in:
- gender: feminine
- number: singular
- case: nominative
So haec lectio means this lesson.
Because lectio is feminine singular nominative, the correct form is haec.