from C.S.Lewis, author of The Chronicles of Narnia, in a letter he wrote to a young fan on June 26, 1956

In writing. Don’t use adjectives which merely tell us  how you want us to feel about the thing you are describing. I mean, instead of telling us a thing was “terrible,” describe it so that we’ll be terrified. Don’t say it was “delightful”; make us say “delightful” when we’ve read the description. You see, all those words (horrifying, wonderful, hideous, exquisite) are only like saying to your readers, “Please will you do my job for me.”