The feelings of those who are always occupied with their own concerns are too keenly affected for them to judge wisely of things.
 Jean-Jacques Rousseau, Emile, or On Education (1762). copy citation

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Author Jean-Jacques Rousseau
Source Emile, or On Education
Topic feelings concern
Date 1762
Language English
Reference
Note Translated by Barbara Foxley
Weblink http://www.gutenberg.org/cache/epub/5427/pg5427-images.html

Context

“Taking such an interest in his fellow-creatures, it is impossible that he should fail to learn very quickly how to note and weigh their actions, their tastes, their pleasures, and to estimate generally at their true value what may increase or diminish the happiness of men; he should do this better than those who care for nobody and never do anything for any one. The feelings of those who are always occupied with their own concerns are too keenly affected for them to judge wisely of things. They consider everything as it affects themselves, they form their ideas of good and ill solely on their own experience, their minds are filled with all sorts of absurd prejudices, and anything which affects their own advantage ever so little, seems an upheaval of the universe.” source