The term "bully pulpit" stems from President Theodore Roosevelt's reference to the White House as a "bully pulpit," meaning a terrific platform from which to persuasively advocate an agenda. Roosevelt often used the word "bully" as an adjective meaning superb/wonderful. The Bully Pulpit features news, reasoned discourse, opinion and some humor.
Of course, the incomparable Miss Rand can say it so much better than I can. Please note the date of this article (1973, not 2001, read the footnote). I expect if Miss Rand were alive today, she would impose an even greater urgency on her arguments. Also, take the arguments for tax credits as one part of the story and then consider her general comments on government education as another.