The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs ... has been, not whether be p… - John Locke

The great and cheif end, therefore, of men uniting into commonwealths, and putting themselves under government, is the preservation of their property; to which in the state of Nature there are many things wanting

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.

Lastly, those are not at all to be tolerated who deny the being of a God. Promises, covenants, and oaths, which are the bonds of human society, can have no hold upon an atheist. The taking away of God, though but even in thought, dissolves all; besides also, those that by their atheism undermine and destroy all religion, can have no pretence of religion whereupon to challenge the privilege of a toleration. As for other practical opinions, though not absolutely free from all error, if they do not tend to establish domination over others, or civil impunity to the Church in which they are taught, there can be no reason why they should not be tolerated.