to explain the principles, that unite our successive perceptions in our thought or consciousness. I cannot discover any theory, which gives me satisfaction on this head.
In short there are two principles, which I cannot render consistent; nor is it in my power to renounce either of them, viz. that all our distinct perceptions are distinct existences, and that the mind never perceives any real connexion among distinct existences. Did our perceptions either inhere in something simple and individual, or did the mind perceive some real connexion among them, there wou'd be no difficulty in the case. For my part, I must plead the privilege of a sceptic, and confess, that this difficulty is too hard for my understanding. I pretend not, however, to pronounce it absolutely insuperable. Others, perhaps, or myself, upon more mature reflections, may discover some hypothesis, that will reconcile those contradictions.
I shall also take this opportunity of confessing two other errors of less importance, which more mature reflection has discover'd to me in my reasoning. The first may be found in Book I. page 58. where I say, that the distance betwixt two bodies is known, among other things, by the angles, which the rays of light flowing from the bodies make with each other. 'Tis certain, that these angles are not known to the mind, and consequently can never discover the distance. The second error may be found in Book I. page 96. where I say, that two ideas of the same object can only be different by their different degrees of force and vivacity. I believe there are other differences among ideas, which cannot properly be comprehended under these terms. Had I said, that two ideas of the same object can only be different by their different feeling, I shou'd have been nearer the truth.
There are two errors of the press, which affect the sense, and therefore the reader is desir'd to correct them. In Book I. page 190. lines 16, 17. for as the perception read a perception. In Book I. p. 263. line 14. for moral read natural.
