his week, the United States Postal Service came in for a full news cycle’s worth of ridicule after it was pointed out, by the Washington Post, that the agency’s new Maya Angelou stamp featured a quotation that the late poet and memoirist didn’t write. The line—“A bird doesn’t sing because it has an answer, it sings because it has a song”—has been widely attributed to Angelou. And it seems like something she might have written, perhaps as a shorthand explanation for the title of her most famous book, “i Know Why the Caged Bird Sings.” But the line, in a slightly different form, was originally published in a poetry collection from 1967 called “A Cup of Sun,” by Joan Walsh Anglund. The Post reported this on Monday. By Tuesday, when such luminaries as First Lady Michelle Obama and Oprah Winfrey stood onstage in front of a giant reproduction of the Angelou stamp at the official unveiling, everyone knew that the words behind them belonged to someone else. According to the U.S.P.S., more than eighty million Angelou stamps were produced, and there are no plans to retract them. <!doctype html>div,ul,li{margin:0;padding:0;}.abgc{height:15px;position:absolute;right:16px;text-rendering:geometricPrecision;top:0;width:15px;z-index:9010;}.abgb{height:100%;}.abgc img{display:block;}.abgc svg{display:block;}.abgs{display:none;height:100%;}.abgl{text-decoration:none;}.cbc{background-image: url('http://pagead2.googlesyndication.com/pagead/images/x_button_blue2.png');background-position: right top;background-repeat: no-repeat;cursor:pointer;height:15px;right:0;top:0;margin:0;overflow:hidden;padding:0;position:absolute;width:16px;z-index:9010;}.cbc.cbc-hover {background-image: url('http://pagead2.googlesyndication.com/pagead/images/x_button_dark.png');}.cbc > .cb-x{height: 15px;position:absolute;width: 16px;right:0;top:0;}.cb-x > .cb-x-svg{background-color: lightgray;position:absolute;}.cbc.cbc-hover > .cb-x > .cb-x-svg{background-color: #58585a;}.cb-x > .cb-x-svg > .cb-x-svg-path{fill : #00aecd;}.cbc.cbc-hover > .cb-x > .cb-x-svg > .cb-x-svg-path{fill : white;}.cb-x > .cb-x-svg > .cb-x-svg-s-path{fill : white;} .ddmc{background:#ccc;color:#000;padding:0;position:absolute;z-index:9020;max-width:100%;box-shadow:2px 2px 3px #aaaaaa;}.ddmc.left{margin-right:0;left:0px;}.ddmc.right{margin-left:0;right:0px;}.ddmc.top{bottom:20px;}.ddmc.bottom{top:20px;}.ddmc .tip{border-left:4px solid transparent;border-right:4px solid transparent;height:0;position:absolute;width:0;font-size:0;line-height:0;}.ddmc.bottom .tip{border-bottom:4px solid #ccc;top:-4px;}.ddmc.top .tip{border-top:4px solid #ccc;bottom:-4px;}.ddmc.right .tip{right:3px;}.ddmc.left .tip{left:3px;}.ddmc .dropdown-content{display:block;}.dropdown-content{display:none;border-collapse:collapse;}.dropdown-item{font:12px Arial,sans-serif;cursor:pointer;padding:3px 7px;vertical-align:middle;}.dropdown-item-hover{background:#58585a;color:#fff;}.dropdown-content > table{border-collapse:collapse;border-spacing:0;}.dropdown-content > table > tbody > tr > td{padding:0;}Ad covers the pageStop seeing this ad.feedback_container {width: 100%;height: 100%;position: absolute;top:0;left:0;display: none;z-index: 9020;background-color: white;}.feedback_page {font-family: "Arial";font-size: 13px;margin: 16px 16px 16px 16px;}.feedback_title {font-weight: bold;color: #000000;}.feedback_page a {font-weight: normal;color: #3366cc;}.feedback_description {color: #666666;line-height: 16px;margin: 12px 0 12px 0;}.feedback_closing {color: #0367ff;line-height: 16px;margin: 12px 0 12px 0;}.feedback_logo {position: absolute;right: 0;bottom: 0;margin: 0 12px 9px 0;}.feedback_logo img {height: 15px;}.survey_description {color: #666666;line-height: 17px;margin: 12px 0 10px 0;}.survey {color: #666666;line-height: 20px;}.survey_option input {margin: 0;vertical-align: middle;}.survey_option_text {margin: 0 0 0 5px;line-height: 17px;vertical-align: bottom;}.survey_option:hover {background-color: lightblue;cursor: default;}it&#39;s gone. UndoWhat was wrong with this ad?inappropriateRepetitiveirrelevantThanks for the feedback! BackWe’ll review this ad to improve your