Out of many thousands in my collection, my favorite is this:
'Tis better to remain silent and be thought a fool than to speak out and remove all doubt.
It is variously attributed to Abraham Lincoln and Mark Twain, but my vote is for Twain, because it sounds so characteristic of his style.
Starting a blog with that advice in mind is a bold step, though. Here's hoping that by speaking out, I don't "remove all doubt."