I mentioned earlier that Phoenician and Hebrew were written and read from right to left. Hebrew still is. Greek is written and read from left to right; the same way you’re reading this sentence.
That big change didn’t happen all at once. For a while the Greeks couldn’t decide which direction they liked better, so they switched directions every other line. They wrote a paragraph of text in the same way a farmer plows a field.
I’m happy to tell you they finally stopped doing that and settled on left-to-right.
Back to the beginning of The Western Civ User’s Guide to Reading & Writing.