You should really put those two lines in quotations. I know the second line is word for word from Seth Godin's blog (http://sethgodin.typepad.com/seths_blog/2007/01/the_differen...), and quick check had your first line pretty close to word for word from Wikipedia.
You are of course correct, editing isn't possible now.
The right strategy makes tactics work better. The right strategy puts less pressure on executing your tactics perfectly.