"If you hold small objects close to your eyes, you limit your field of vision and shut out the world. And, in the same way, the people or the things which stand nearest, even though they are of the very smallest consequence, are apt to claim an amount of attention much beyond their due, occupying us disagreeably, and leaving no room for serious thoughts and affairs of importance. We ought to work against this tendency."
January 1, 1970
https://en.wikiquote.org/wiki/Attention