How often must I repeat, that I know or am conscious of my own being; and that I myself am not my ideas, but somewhat else, a thinking, active principle that perceives, knows, wills, and operates about ideas?

Man is an Animal, formidable both from his Passions and his Reason; his Passions often urging him to great Evils, and his Reason furnishing Means to achieve them. To train this Animal, and make him amenable to Order; to inure him to a Sense of Justice and Virtue, to withhold him from ill Courses by Fear, and encourage him in his Duty by Hopes; in short, to fashion and model him for Society, hath been the Aim of civil and religious Institutions; and, in all Times, the Endeavour of good and wise Men. The aptest Method for attaining this End, hath been always judged a proper Education.

Nothing can be plainer, than that the motions, changes, decays, and dissolutions, which we hourly see befall natural bodies (and which is what we mean by the course of nature), cannot possibly affect an active, simple, uncompounded substance: such a being therefore is indissoluble by the force of nature, that is to say, the soul of man is naturally immortal.

All the choir of heaven and furniture of earth - in a word, all those bodies which compose the frame of the world - have not any subsistence without a mind.

There being in the make of an English mind a certain gloom and eagerness, which carries to the sad extreme; religion to fanaticism; free-thinking to atheism; liberty to rebellion.

I might as well doubt of my own being, as of the being of those things I actually see and feel.

But, say you, surely there is nothing easier than for me to imagine trees, for instance, in a park [. . .] and nobody by to perceive them. [...] The objects of sense exist only when they are perceived; the trees therefore are in the garden [. . .] no longer than while there is somebody by to perceive them.