When we regress Y on X, we use the values of variable X to predict those of Y.

From T’ai-yuan, Wang could have made a trip to the Great Wall in northern Shansi.

I had hacked at the head of one man with my hunting-knife, which was almost as big and heavy as a short sword, with such vigour, that the sharp steel had split his skull down to the eyes, and was held so fast by it that as he suddenly fell sideways the knife was twisted right out of my hand.

The mountains quake at him, and the hills melt, and the earth is burnt at his presence.