It is practice alone that brings the powers of the mind, as well as those of the body, to their perfection.
John LockeWhosoever is found variable, and changeth manifestly without manifest cause, giveth suspicion of corruption: therefore, always, when thou changest thine opinion or course, profess it plainly, and declare it, together with the reasons that move thee to change.
John LockeFreedom of men under government is to have a standing rule to live by, common to every one of that society and made by the legislative power vested in it and not to be subject to the inconstant, uncertain, arbitrary will of another man.
John LockeIf we will disbelieve everything, because we cannot certainly know all things, we shall do much what as wisely as he who would not use his legs, but sit still and perish, because he had no wings to fly.
John LockeIn short, herein seems to lie the difference between idiots and madmen, that madmen put wrong ideas together, and so make wrong propositions, but argue and reason right from them: but idiots make very few or no propositions, and reason scarce at all.
John LockeWhensoever, therefore, the legislative shall transgress this fundamental rule of society, and either by ambition, fear, folly, or corruption, endeavour to grasp themselves, or put into the hands of any other, an absolute power over the lives, liberties, and estates of the people, by this breach of trust they forfeit the power the people had put into the hands... and it devolves to the people, who have a right to resume their original liberty, and... provide for their own safety and security.
John Locke