Memory is the not letting go of an object that one has been aware of. The hindering of the modifications of the mind already referred to, is to be effected by means of Exercise and Dispassion. Exercise is the uninterrupted, or repeated, effort that the mind shall remain in its unmoved state. This is to say that in order to acquire concentration we must, again and again, make efforts to obtain such control over the mind that we can, at any time when it seems necessary, so reduce it to an unmoved condition or apply it to any one point to the exclusion of all others. This exercise is a firm position observed out of regard for the end in view, and perseveringly adhered to for a long time without intermission.
Dispassion is the having overcome one's desires.
Dispassion, carried to the utmost, is indifference regarding all else than soul, and this indifference arises from a knowledge of soul as distinguished from all else. Go Higher 17. The sort of meditation referred to is a pondering wherein the nature of that which is to be pondered upon is well known, without doubt or error, and it is a distinct cognition which excludes every other modification of the mind than that which is to be pondered upon. The Deliberative division is a pondering in regard to whence have come, and where is the field of action, of the subtler senses and the mind. The Beatific condition is that in which the higher powers of the mind, together with truth in the abstract, are pondered upon.