He who is gracious to his lover under the impression that he is rich, and is disappointed of his gains because he turns out to be poor, is disgraced all the same: for he has done his best to show that he would give himself up to any one's "uses base" for the sake of money; but this is not honourable.
To become indignant at [people's] conduct is as foolish as to be angry with a stone because it rolls into your path. And with many people the wisest thing you can do, is to resolve to make use of those whom you cannot alter.
We coin concepts and we use them to analyse and explain nature and society. But we seem to forget, midway, that these concepts are our own constructs and start equating them with reality.