“We stand for lower, simpler, fairer taxes, not great big new taxes that damage Australia's economy, not great big new taxes that are yet another hit on the cost of living of struggling Australian families.”

Quoted in "Fact file: What Tony Abbott promised on tax" http://www.abc.net.au/news/2014-05-01/fact-file-what-tony-abbott-promised-on-tax/5420226 ABC News, July 23, 2014.
2011

2010

Campaign rally for V.P. George H.W. Bush, San Diego California (7 November 1988), as quoted in Common Sense of an Uncommon Man https://en.wikiquote.org/wiki/Special:BookSources/1400324203, Thomas Nelson Inc. (2014), Jim Denney & Michael Reagan, 'Bureaucracy and Bureaucrats'
1980s, Second term of office (1985–1989)

In November 2003. breakingnews.ie http://www.breakingnews.ie/ireland/higgins-mccreevy-must-deliver-tax-justice-in-budget-123560.html

1910s, The New Nationalism (1910)
Context: No man should receive a dollar unless that dollar has been fairly earned. Every dollar received should represent a dollar's worth of service rendered — not gambling in stocks, but service rendered. The really big fortune, the swollen fortune, by the mere fact of its size acquires qualities which differentiate it in kind as well as in degree from what is possessed by men of relatively small means. Therefore, I believe in a graduated income tax on big fortunes, and in another tax which is far more easily collected and far more effective — a graduated inheritance tax on big fortunes, properly safeguarded against evasion and increasing rapidly in amount with the size of the estate.

Presidential campaign (April 12, 2015 – 2016), Speech in Warren, Michigan (August 11, 2016)

Presidential campaign (April 12, 2015 – 2016), Speech in Warren, Michigan (August 11, 2016)

As quoted in The Times Herald, Norristown, Pennsylvania (1 December 1978)
Context: There's a sense in which all taxes are antagonistic to free enterprise … and yet we need taxes. We have to recognize that we must not hope for a Utopia that is unattainable. I would like to see a great deal less government activity than we have now, but I do not believe that we can have a situation in which we don't need government at all. We do need to provide for certain essential government functions — the national defense function, the police function, preserving law and order, maintaining a judiciary. So the question is, which are the least bad taxes? In my opinion the least bad tax is the property tax on the unimproved value of land, the Henry George argument of many, many years ago.

quoted in [24 March 1990, Paul, Taylor, Democratic Leaders Talk Tough on Taxes;President's Promise Not to Impose New Levies Is 'Pure Bushlips,' Sen. Bentsen Declares, The Washington Post, 0190-8286, A6, http://pqasb.pqarchiver.com/washingtonpost/access/72577580.html?FMT=ABS&FMTS=ABS:FT&date=Mar+24%2C+1990&author=Paul+Taylor&pub=The+Washington+Post+(pre-1997+Fulltext)&edition=&startpage=a.06&desc=Democratic+Leaders+Talk+Tough+on+Taxes%3BPresident%27s+Promise+Not+to+Impose+New+Levies+Is+%60Pure+Bushlips%2C%27+Sen.+Bentsen+Declares]
alluding to George H. W. Bush's pledge “Read my lips: no new taxes” while accepting the presidential nomination at the 1988 Republican National Convention