" To look at a star by glances - to view it in a side-long way, by turning toward it the exterior portions of the retina (more susceptible of feeble impressions of light than the interior), is to behold the star distinctly - is to have the best appreciation of its lustre - a lustre which grows dim just in proportion as we turn our vision fully upon it. "

― Edgar Allan Poe , Tales and Sketches, vol. 1: 1831-1842