The senate has a standing rule never to discuss a matter on the same day when it was first introduced; all new business is deferred to the next meeting. They do this so that a man will not blurt out the first thought that occurs to him, and then devote all his energies to defending those foolish impulses, instead of considering impartially the public good. They know that some men would rather jeopardize the welfare of the state than admit to having been heedless and shortsighted — so perverse and preposterous is their sense of pride. They should have had enough foresight at the beginning to speak with prudence rather than haste.

[Quin id quoque moris habet senatus, ut nihil, quo die primum proponitur, eodem disputetur. sed in sequentem senatum differatur, ne quis ubi quod in buccam primum uenerit, temere effutierit, ea potius excogitet postea, quibus decreta tueatur sua, quam quae ex reipublicae usu sint. malitque salutis publicae, quam opinionis de se iacturam facere, peruerso quodam ac praepostero pudore, ne initio parum prospexisse uideatur. Cui prospiciendum initio fuit, ut consulto potius, quam cito loqueretur.]

Thomas More (1478-1535) English lawyer, social philosopher, statesman, humanist, Christian martyr

Utopia, Book 2, ch. 3 “Of Their Magistrates” (1518 ed.) [tr. Adams (1992 ed.)]
    (Source)

(Source (Latin)). Other translations:

Furthermore this custome also the counsel useth, to dispute or reason of no matter the same daye that it is firste proposed or put furthe, but to defferre it to the nexte syttinge of the counsell. Because that no man when he hath rashely there spoken that commeth to his tonges ende, shall then afterwarde rather studye for reasons wherwith to defende and mainteine his first folish sentence, than for the commoditie of the common welath: as one rather willing the harme or hindraunce of the weale publike then any losse or diminution of his owne existimation. And as one that would be ashamed (which is a verie folishe shame) to be counted anye thing at the first oversene in the matter. Who at the first ought to have spoken rather wyselye, then hastely, or rashlye.
[tr. Robynson (1551)]

One Rule observed in their Council, is, never to debate a thing on the same day in which it is first proposed; for that is always referred to the next meeting, that so Men may not rashly, and in the heat of Discourse, engage themselves too soon, which may bias them so much, that instead of considering the Good of the Publick, they will rather study to maintain their own Notions; and by a perverse and preposterous sort of shame, hazard their Country, rather than endanger their own Reputation, or venture the being suspected to have wanted foresight in the Expedients that they proposed at first. and therefore to prevent this, they take care that they may rather be deliberate, than sudden in their motions.
[tr. Burnet (1684)]

One rule observed in their council is, never to debate a, subject on the day on which it is proposed. It is ever referred to the next meeting, for fear of rashness and the heat of argument; which might lead them, instead of consulting the public good, to support their first opinions, and hazard their country rather than endanger their own reputation. To prevent this, they are made deliberate rather than expeditious.
[tr. Cayley (1808)]

One rule observed in their council is, never to debate a thing on the same day in which it is first proposed; for that is always referred to the next meeting, that so men may not rashly and in the heat of discourse engage themselves too soon, which might bias them so much that, instead of consulting the good of the public, they might rather study to support their first opinions, and by a perverse and preposterous sort of shame hazard their country rather than endanger their own reputation, or venture the being suspected to have wanted foresight in the expedients that they at first proposed; and therefore, to prevent this, they take care that they may rather be deliberate than sudden in their motions.
[tr. Burnet/Morley (1901)]

Furthermore this custom also the council useth, to dispute or reason of no matter the same day that it is first proposed or put forth, but to defer it to the next sitting of the council. Because that no man when he hath rashly there spoken that cometh first to his tongue’s end, shall then afterward rather study for reasons wherewith to defend and confirm his first foolish sentence, than for the commodity of the commonwealth: as one rather willing the harm or hindrance of the weal public than any loss or diminution of his own existimation. And as one that would not for shame (which is a very foolish shame) be counted anything overseen in the matter at the first. Who at the first ought to have spoken rather wisely, than hastily, or rashly.
[tr. Robinson (1909 ed)]

Moreover the Senate has this custom, that nothing is decided on the same day on which it is first propounded, but that it is put off till the next meeting, and this lest anyone after hastily uttering the idea that first came into his mouth, should afterwards think more of how to defend his opinion than of supporting what is for the good of the commonwealth, and should prefer to jeopardise the public weal rather than risk his reputation through a wrongheaded and misplaced shame, fearing he may be thought to have shown too little foresight at the first, though he should have taken care to speak with wisdom rather than with haste in the first instance.
[tr. Richards (1923)]

There's also a rule in the Council that no resolution can be debated on the day that it's first proposed. All discussion is posponed until the next well-attended meeting. Otherwise someone’s liable to say the first thing that comes into his head, -- and then start thinking up arguments to justify what he has said, instead of trying to decide what’s best for the community. That type of person is quite prepared to sacrifice the public to his own prestige, just because, absurd as it may sound, he’s ashamed to admit that his first idea might have been wrong -- when his first idea should have been to think before he spoke.
[tr. Turner (1965 ed.); (2003 ed.)]

In addition, the senate has the custom of debating nothing on the same day on which it is first proposed but of putting it off till the next meeting. This is their rule lest anyone, after hastily blurting out the first thought that popped into his head, should afterwards give more thought to defending his opinion than to supporting what is for the good of the commonwealth, and should prefer to jeopardize the public welfare rather than to risk his reputation through a wrongheaded and misplaced shame, fearing he might be thought to have shown too little foresight at the first -- though he should have been enough foresighted at the first to speak with prudence rather than with haste!
[tr. Richards/Surtz (1964)]

The Council of Tranibors also follows the practice of never debating a proposition on the day it’s first put forward, but of deferring it to the next meeting. Otherwise someone who has heedlessly blurted out the first idea to come into their mouth may later give more thought to defending their own position than to the country’s interests. Indeed, they may choose to sacrifice the public well-being to their own reputation out of a mistaken and misplaced sense of embarrassment at not having been clear-minded enough at the start — though being clear-minded at the start should have meant speaking thoughtfully rather than in haste.
[tr. Clarke (2017)]