All that is necessary for the triumph of evil is that good men do nothing.
This is probably the most quoted statement attributed to Burke, and an extraordinary number of variants of it exist, but all without any definite original source. They closely resemble remarks known to have been made by the Utilitarian philosopher John Stuart Mill, in an [http://books.google.com/books?id=DFNAAAAAcAAJ&pg=PA36&dq=%22Bad+men+need+nothing+more+to+compass+their+ends,+than+that+good+men+should+look+on+and+do+nothing%22&hl=en&sa=X&ei=RUh5U6qWBLSysQT0vYGAAw&ved=0CEEQ6AEwBA#v=onepage&q=%22Bad%20men%20need%20nothing%20more%20to%20compass%20their%20ends%2C%20than%20that%20good%20men%20should%20look%20on%20and%20do%20nothing%22&f=false address at the University of St. Andrew (1 February 1867)] : Bad men need nothing more to compass their ends, than that good men should look on and do nothing. The very extensively used remarks attributed to Burke might be based on a paraphrase of some of his ideas, but he is not known to have ever declared them in so succinct a manner in any of his writings. It has been suggested that they may have been adapted from these lines of Burke's in his [http://oll.libertyfund.org/Texts/LFBooks/Burke0061/SelectWorks/HTMLs/0005-01_Pt02_Thoughts.html Thoughts on the Cause of the Present Discontents] (1770): "When bad men combine, the good must associate; else they will fall one by one, an unpitied sacrifice in a contemptible struggle." (see above)