Active and passive power, in motions and in thinking.
True notions concerning the nature and extent of LIBERTY are of so great importance, that I hope I shall be pardoned this digression, which my attempt to explain it has led me into.

The ideas of will, volition, liberty, and necessity, in this Chapter of Power, came naturally in my way.

In a former edition of this Treatise I gave an account of my thoughts concerning them, according to the light I then had.

And now, as a lover of truth, and not a worshipper of my own doctrines, I own some change of my opinion; which I think I have discovered ground for.

In what I first writ, I with an unbiassed indifferency followed truth, whither I thought she led me.