Adam Smith, The Theory of the Moral Sentiments:

The poor man, on the contrary, is ashamed of his poverty. He feels that it either places him out of the sight of mankind, or, that if they take any notice of him, they have, however, scarce any fellow-feeling with the misery and distress which he suffers. He is mortified upon both accounts. For though to be overlooked, and to be disapproved of, are things entirely different, yet as obscurity covers us from the daylight of honour and approbation, to feel that we are taken no notice of, necessarily damps the most agreeable hope, and disappoints the most ardent desire, of human nature. The poor man goes out and comes in unheeded, and when in the midst of a crowd is in the same obscurity as if shut up in his own hovel….The man of rank and distinction, on the contrary, is observed by all the world. Every body is eager to look at him, and to conceive, at least by sympathy, that joy and exultation with which his circumstances naturally inspire him. His actions are the objects of the public care. Scarce a word, scarce a gesture, can fall from him that is altogether neglected. In a great assembly he is the person upon whom all direct their eyes; it is upon him that their passions seem all to wait with expectation, in order to receive that movement and direction which he shall impress upon them; and if his behaviour is not altogether absurd, he has, every moment, an opportunity of interesting mankind, and of rendering himself the object of the observation and fellow-feeling of every body about him.

Bertolt Brecht, “Mackie Messer” (“Mack the Knife“), Three Penny Opera:

And some are in the darkness
And the others in the light
But you only see those in the light
Those in the darkness you don’t see

But you only see those in the light
Those in the darkness you don’t see

[Und die einen sind im Dunkeln
Und die anderen sind im Licht
Doch man sieht nur die im Lichte
Die im Dunklen sieht man nicht

Doch man sieht nur die im Lichte
Die im Dunklen sieht man nicht]