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http://dx.doi.org/10.1037/12748-006
Memory, like other primitive mental processes, is best known in the personal consciousness of its exercise, and needs, for its practical definition, little more than the use of such forms of words as will indicate to the student the distinctive process of consciousness sought to be defined. Scientifically, however, it demands such a collocation of terms as will, in thought, include all the essential elements of the complex act of consciousness, and exclude all others. It may, perhaps, with sufficient accuracy, be defined to be that power or faculty of consciousness by which it retains, reproduces, or recollects, its own acts or affections. At first thought, this limitation of memory to acts and affections of consciousness would seem to be too narrow; yet it cannot be extended, since other things, if remembered at all, are recollected only in and through the acts and affections of the personal consciousness. (PsycINFO Database Record (c) 2016 APA, all rights reserved)