John Locke: Use

John Locke was English philosopher and physician. Explore interesting quotes on use.
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“He that will impartially survey the Nations of the World, will find so much of the Governments, Religion, and Manners brought in and continued amongst them by these means, that they will have but little Reverence for the Practices which are in use and credit amongst Men.”

First Treatise of Government
Two Treatises of Government (1689)
Context: The imagination is always restless and suggests a variety of thoughts, and the will, reason being laid aside, is ready for every extravagant project; and in this State, he that goes farthest out of the way, is thought fittest to lead, and is sure of most followers: And when Fashion hath once Established, what Folly or craft began, Custom makes it Sacred, and 'twill be thought impudence or madness, to contradict or question it. He that will impartially survey the Nations of the World, will find so much of the Governments, Religion, and Manners brought in and continued amongst them by these means, that they will have but little Reverence for the Practices which are in use and credit amongst Men.

“The necessity of believing without knowledge, nay often upon very slight grounds, in this fleeting state of action and blindness we are in, should make us more busy and careful to inform ourselves than constrain others.”

Book IV, Ch. 16, sec. 4
An Essay Concerning Human Understanding (1689)
Context: For where is the man that has incontestable evidence of the truth of all that he holds, or of the falsehood of all he condemns; or can say that he has examined to the bottom all his own, or other men's opinions? The necessity of believing without knowledge, nay often upon very slight grounds, in this fleeting state of action and blindness we are in, should make us more busy and careful to inform ourselves than constrain others. At least, those who have not thoroughly examined to the bottom all their own tenets, must confess they are unfit to prescribe to others; and are unreasonable in imposing that as truth on other men's belief, which they themselves have not searched into, nor weighed the arguments of probability, on which they should receive or reject it. Those who have fairly and truly examined, and are thereby got past doubt in all the doctrines they profess and govern themselves by, would have a juster pretence to require others to follow them: but these are so few in number, and find so little reason to be magisterial in their opinions, that nothing insolent and imperious is to be expected from them: and there is reason to think, that, if men were better instructed themselves, they would be less imposing on others.

“We are all a sort of camelions, that still take a tincture from things near us”

Sec. 67
Some Thoughts Concerning Education (1693)
Context: We are all a sort of camelions, that still take a tincture from things near us; nor is it to be wonder'd at in children, who better understand what they see than what they hear.

“I am sure, zeal or love for truth can never permit falsehood to be used in the defence of it.”

187
The Reasonableness of Christianity (1695)

“The old question will be asked in this matter of prerogative, But who shall be judge when this power is made a right use of? 1 answer: between an executive power in being, with such a prerogative, and a legislative that depends upon his will for their convening, there can be no judge on earth; as there can be none between the legislative and the people, should either the executive, or the legislative, when they have got the power in their hands, design, or go about to enslave or destroy them. The people have no other remedy in this, as in all other cases where they have no judge on earth, but to appeal to heaven: for the rulers, in such attempts, exercising a power the people never put into their hands, (who can never be supposed to consent that any body should rule over them for their harm) do that which they have not a right to do. And where the body of the people, or any single man, is deprived of their right, or is under the exercise of a power without right, and have no appeal on earth, then they have a liberty to appeal to heaven, whenever they judge the cause of sufficient moment. And therefore, though the people cannot be judge, so as to have, by the constitution of that society, any superior power, to determine and give effective sentence in the case; yet they have, by a law antecedent and paramount to all positive laws of men, reserved that ultimate determination to themselves which belongs to all mankind, where there lies no appeal on earth, viz. to judge, whether they have just cause to make their appeal to heaven. And this judgment they cannot part with, it being out of a man's power so to submit himself to another, as to give him a liberty to destroy him; God and nature never allowing a man so to abandon himself, as to neglect his own preservation: and since he cannot take away his own life, neither can he give another power to take it. Nor let any one think, this lays a perpetual foundation for disorder; for this operates not, till the inconveniency is so great, that the majority feel it, and are weary of it, and find a necessity to have it amended. But this the executive power, or wise princes, never need come in the danger of: and it is the thing, of all others, they have most need to avoid, as of all others the most perilous.”

Second Treatise of Government http://www.constitution.org/jl/2ndtr14.htm, Sec. 168
Two Treatises of Government (1689)