"Abortion and the Conscience of the Nation" by President Ronald Reagan. This is the only book written by a sitting US President.
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In 1983, President reagan wrote an essay for the "Human Life Review" entitled, " abortion and the conscience of the Nation." This brief writing of his pro-life philosophy was published in book form a year later. It was expanded to approximately 95 pages with lengthy afterwords by Surgeon General C. Everett Koop and British essayist Malcolm Muggeridge.
It is also significant as it was the first ever by a sitting President. It was President Reagan's attempt to awaken a nation to the implications of abortion. In this short book, President reagan gives an account on how important the issue of abortion is to the " conscience of a nation." President Reagan's essay is only 26 pages of the book.