This has been beaten to death a long time ago. I suggest Mill "On Liberty," Chapter 2. Is it taught in schools anymore ? I fear not.
"If all mankind minus one, were of one opinion, and only one person were of the contrary opinion, mankind would be no more justified in silencing that one person, than he, if he had the power, would be justified in silencing mankind."
"All silencing of discussion is an assumption of infallibility."
"Strange it is, that men should admit the validity of the arguments for free discussion, but object to their being "pushed to an extreme;" not seeing that unless the reasons are good for an extreme case, they are not good for any case. Strange that they should imagine that they are not assuming infallibility, when they acknowledge that there should be free discussion on all subjects which can possibly be doubtful, but think that some particular principle or doctrine should be forbidden to be questioned because it is so certain, that is, because they are certain that it is certain."
" For even this doctrine acknowledges that mankind ought to have a rational assurance that all objections have been satisfactorily answered; and how are they to be answered if that which requires to be answered is not spoken? or how can the answer be known to be satisfactory, if the objectors have no opportunity of showing that it is unsatisfactory?"
"If there are any persons who contest a received opinion, or who will do so if law or opinion will let them, let us thank them for it, open our minds to listen to them, and rejoice that there is some one to do for us what we otherwise ought, if we have any regard for either the certainty or the vitality of our convictions, to do with much greater labor for ourselves."
"First, if any opinion is compelled to silence, that opinion may, for aught we can certainly know, be true. To deny this is to assume our own infallibility."
"Secondly, though the silenced opinion be an error, it may, and very commonly does, contain a portion of truth; and since the general or prevailing opinion on any subject is rarely or never the whole truth, it is only by the collision of adverse opinions that the remainder of the truth has any chance of being supplied."
"Thirdly, even if the received opinion be not only true, but the whole truth; unless it is suffered to be, and actually is, vigorously and earnestly contested, it will, by most of those who receive it, be held in the manner of a prejudice, with little comprehension or feeling of its rational grounds."
"And not only this, but, fourthly, the meaning of the doctrine itself will be in danger of being lost, or enfeebled, and deprived of its vital effect on the character and conduct: the dogma becoming a mere formal profession, inefficacious for good, but cumbering the ground, and preventing the growth of any real and heartfelt conviction, from reason or personal experience."
https://www.bartleby.com/130/2.htmlRead the whole thing. Or perhaps, Milton in "Aeropagitica"
" We should be wary therefore what persecution we raise against the living labours of publick men, how we spill that season'd life of man preserv'd and stor'd up in Books; since we see a kinde of homicide may be thus committed, sometimes a martyrdome, and if it extend to the whole impression, a kinde of massacre, whereof the execution ends not in the slaying of an elementall life, but strikes at that ethereall and fift essence, the breath of reason it selfe, slaies an immortality rather then a life."
"As therefore the state of man now is; what wisdome can there be to choose, what continence to forbeare without the knowledge of evill?"
"Assuredly we bring not innocence into the world, we bring impurity much rather: that which purifies us is triall, and triall is by what is contrary. That vertue therefore which is but a youngling in the contemplation of evill, and knows not the utmost that vice promises to her followers, and rejects it, is but a blank vertue, not a pure; her whitenesse is but an excrementall whitenesse"
"Since therefore the knowledge and survay of vice is in this world so necessary to the constituting of human vertue, and the scanning of error to the confirmation of truth, how can we more safely, and with lesse danger scout into the regions of sin and falsity then by reading all manner of tractats, and hearing all manner of reason? And this is the benefit which may be had of books promiscuously read."
"Truth and understanding are not such wares as to be monopoliz'd and traded in by tickets and statutes, and standards. We must not think to make a staple commodity of all the knowledge in the Land, to mark and licence it like our broad cloath, and our wooll packs. "
"that if it come to inquisitioning again, and licencing, and that we are so timorous of our selvs, and so suspicious of all men, as to fear each book, and the shaking of every leaf, before we know what the contents are, if some who but of late were little better then silenc't from preaching, shall come now to silence us from reading, except what they please, it cannot be guest what is intended by som but a second tyranny over learning"
"Where there is much desire to learn, there of necessity will be much arguing, much writing, many opinions; for opinion in good men is but knowledge in the making. Under these fantastic terrors of sect and schism, we wrong the earnest and zealous thirst after knowledge and understanding which God hath stirr'd up in this city. What some lament of, we rather should rejoyce at, should rather praise this pious forwardnes among men, to reassume the ill deputed care of their Religion into their own hands again."
"What would ye doe then, should ye suppresse all this flowry crop of knowledge and new light sprung up and yet springing daily in this City, should ye set an Oligarchy of twenty ingrossers over it, to bring a famin upon our minds again, when we shall know nothing but what is measur'd to us by their bushel?"
"it is the liberty, Lords and Commons, which your own valorous and happy counsels have purchast us, liberty which is the nurse of all great wits; this is that which hath rarify'd and enlighten'd our spirits like the influence of heav'n; this is that which hath enfranchis'd, enlarg'd and lifted up our apprehensions degrees above themselves. Ye cannot make us now lesse capable, lesse knowing, lesse eagarly pursuing of the truth, unlesse ye first make your selves, that made us so, lesse the lovers, lesse the founders of our true liberty. We can grow ignorant again, brutish, formall, and slavish, as ye found us; but you then must first become that which ye cannot be, oppressive, arbitrary, and tyrannous, as they were from whom ye have free'd us. That our hearts are now more capacious, our thoughts more erected to the search and expectation of greatest and exactest things, is the issue of your owne vertu propagated in us; ye cannot suppresse that unlesse ye reinforce an abrogated and mercilesse law, that fathers may dispatch at will their own children"
"Give me the liberty to know, to utter, and to argue freely according to conscience, above all liberties. "
"And though all the windes of doctrin were let loose to play upon the earth, so Truth be in the field, we do injuriously, by licencing and prohibiting to misdoubt her strength. Let her and Falshood grapple; who ever knew Truth put to the wors, in a free and open encounter. Her confuting is the best and surest suppressing."
"Truth is strong next to the Almighty; she needs no policies, nor stratagems, nor licencings to make her victorious, those are the shifts and the defences that error uses against her power: give her but room, & do not bind her when she sleeps, for then she speaks not true"
"We doe not see that while we still affect by all means a rigid externall formality, we may as soon fall again into a grosse conforming stupidity, a stark and dead congealment "
"if it come to prohibiting, there is not ought more likely to be prohibited then truth it self"
" And if the men be erroneous who appear to be the leading schismaticks, what witholds us but our sloth, our self-will, and distrust in the right cause, that we doe not give them gentle meeting and gentle dismissions, that we debate not and examin the matter throughly with liberall and frequent audience; if not for their sakes, yet for our own? "
"we in the hast of a precipitant zeal shall make no distinction, but resolve to stop their mouths, because we fear they come with new and dangerous opinions, as we commonly forejudge them ere we understand them, no lesse then woe to us, while thinking thus to defend the Gospel, we are found the persecutors. "
https://www.dartmouth.edu/~milton/reading_room/areopagitica/text.htmlsidd
