The greatest faculty of all is that of imagination; but it is the least understood, due principally to the fact that most minds have remained in grooves of thought, and therefore have not given extensive attention to their own creative possibilities, the richest and most numerous of which exist in the fields of imagination. In the development of any power or talent, however, these creative possibilities must receive direct and scientific attention; and this is especially true with regard to the power of concentration. Besides, some of the functions of concentration are so closely related to those of imagination as to seem almost identical.
~Christian D. Larson
Simply Etta 