"But with a catlike speed..."

"..He seemed more a part of the sun and high places of the outlands. His slightest movement spoke of steel-spring muscles knit to a keen brain with the co-ordination of a born fighting man. There was nothing deliberate or measured about his actions. Either he was perfectly at rest - still as a bronze statue - or else he was in motion, not with the jerky quickness of over-tense nerves, but with a catlike speed that blurred the sight which tried to follow him." - The Phoenix on the Sword

Happy birthday, Mr. Howard.