Take your inspiration from wherever you find it, no matter how ridiculous.

If you're not worried that you're pricing it too cheap, you're not pricing it cheap enough.

Use half as many words and they'll hit twice as hard.

If you want the truth to prevail, you must cause people to realize the truth. This requires much more skill than is required to simply tell it.

In a thousand words I can have the Lord's Prayer, the 23rd Psalm, the Hippocratic Oath, a sonnet by Shakespeare, the Preamble to the Constitution, Lincoln's Gettysburg Address and almost all of the Boy Scout Oath. Now exactly what picture were you planning to trade for all that?

Lives, like money, are spent. What are you buying with yours?

The first step in persuasion is to entice your target to imagine doing the thing you want them to do.