Sunlight...
We often ignore that which is present, in order to see that which is not. Sunlight upon the leaf is the appearence of accumulated photons of energy, traveling the vast distance from our Sun. But it is the object that is struck, and the reflection of that energy that accumulates in our retinal nerve, ultimately reaching the visual cortex of our brain, that compiles itself into the cogent image we see. In short, we see what is present because what we cannot see illuminates the path...
So as we travel in our little orbits, observe that which you see, but be aware that each observation is preferentially lit, and that what you see is only a reflection, and that the source of the illumination must be considered. This is true of all things, and is especially applicable to puppies, kittens, butterflies and most people.
In summary, we each and every one of us receive the same source of light, but each of us reflects it in a unique way. Open your eyes to the vast spectrum of reflected light, and you will see better, and judge more wisely.
Mustang