One particularly clear example comes from a Middle English version of the Rule of St. Benedict, dated roughly 1350–1420. In a section specifically explaining how “silence” is to be observed, it says:
“Sain benet spekis in þis sentence of silence, how ȝe sal it halde... for þi sal ȝe seldin speke...”
That is essentially:
“Saint Benedict speaks in this section concerning silence, how you shall keep it... therefore you shall seldom speak.”
The important point is that it says “seldom speak,” not “never speak.” In fact, the same passage goes on to say that the mistress ought to speak in order to teach her disciples wisdom. So the “silence” being described clearly allows appropriate speech while emphasizing restraint and moderation.
Source:
https://quod.lib.umich.edu/c/cme/AHA2736/1:1?rgn=div1;view=fulltext
I honestly do not see how those passages use silence to mean calm or taciturn speaking. Those commanded to keep silence are forbidden to speak under threat of correction for doing so.
Of silence eftir cumplin spekis sain Benet in þis sentence, and bidis þat ye sal do yu payne at halde silence eftir cumplin. yef þe cuuent etis tuise, Als tite as tay rise fra þe supere, þan sal þai site wid ordir in þe cloistir. when colaciun ringis, þan salle alle asembil in þe chapitir. an [folio 26a] sal rede þe lescun of þe halizis, ouþir of haly writ, for to comforth þaim þat it heris. In þat tyme sal ye noht rede þe boke of þe kingis, for nan vnait sal be herde þat tyme for þa þat ere of febil þoht; In oþir tyme mai it be red. yef it be fasting day, þai sal haue gode entirual, And when colaciun ringis, Alle þat þe belle heris ga til to [to, for te (= þe)? or redundant (= til)?] colaciun; And siþin eftir at cumplin; siþin be nan sua hardy to speke.
yef ani es tan wid-al, þat hauis brokin silence eftir cumplin, smerte correccion salle man take of hir. yef gestis cume, and tabbesse cumandis at description PAGE 30 speke, þat tare be nane vtrage.
“
Concerning silence after Compline, Saint Benedict speaks in this passage and
commands that you make every effort to keep silence after Compline. If the community eats twice a day, then, as soon as they rise from supper, they shall sit in order in the cloister.
When the bell rings for the reading, everyone shall assemble in the chapter house. Then a reading from the lives of the saints, or from Holy Scripture, shall be read, to comfort those who hear it.
At that time you shall not read the Book of Kings, because nothing unsuitable should be heard then by those who are weak in understanding. At another time it may be read.
If it is a fasting day, they shall have a good interval [between meals]. When the bell rings for collation, everyone who hears the bell shall go to collation, and afterwards to Compline. After that, no one shall be so bold as to speak.
If anyone is caught breaking silence after Compline, she shall receive severe correction from her. If guests arrive and the abbess commands
In þis sentence cumandis sain benet þat te lescun sal noht faile at mete. O þis maner sal þis be stabilist, þat nan ta þe boke at [folio 24a] rede bot sho þat sal rede al þe wuke; sho sal beginne o-po þe sunday. sho sal cum by-fore þauter o þe sunday efter þe messe and say þris þis verse, and al þe cuuent eftir: "Domine, labia mea aperies," And recaiue þe benediccion, þat gete hir fra pride.
Þai sal halde silence at te borde, þat na uoice be herde bot of hir þat redis. Þa þat serue sal ta yeme til þam þat etes, þat tay haue na defaute of þat tay sal haue, wharfore þai make na noise. Yef [The subject (ani, or the like) is omitted.] wil aske ani thing, sho salle make sinis and noght speke. Nane sal speke of na demande in þe lescun, whar-of noise may rise.
“In this passage Saint Benedict commands that the reading shall not be omitted at mealtime. It shall be arranged in this way: no one shall take the book to read except the woman who is to read for the whole week. She shall begin on Sunday.
After Mass on Sunday, she shall come before the altar and say this verse three times, with the whole community repeating it each time:
Domine, labia mea aperies
“Lord, open my lips.”
Then she shall receive the blessing, which protects her from pride.
They shall keep silence at the table, so that no voice is heard except that of the reader. Those who serve shall attend to the diners, so that they lack none of what they need,
and therefore have no reason to make a noise.
If anyone wishes to ask for something, she shall make signs and must not speak. No one shall speak or ask any question about the reading, since this might cause noise.”