The source and center of all man’s creative power... is his power of making images, or the power of imagination.

Collier’s line treats imagination not as ornament but as the generative engine behind human achievement. By calling it the “source and center” of creative power, the quote suggests that invention, art, and even practical problem‑solving begin as inner pictures—mental models that can be revised, combined, and projected into action. The emphasis on “making images” frames creativity as a skill of visualization: the capacity to form vivid possibilities before they exist. In this view, imagination mediates between desire and reality, supplying the blueprint that effort and technique later translate into tangible results. The statement also implies that cultivating imagination—clarity, focus, and constructive imagery—expands one’s creative range.