1810 Human virtues acquired by education, by deliberate acts and by a perseverance ever-renewed in repeated efforts are purified and elevated by divine grace. With God’s help, they forge character and give facility in the practice of the good. The virtuous man is happy to practice them. (CCC 1810)
I get the feeling some of the hostility to Pelagius was for straw-man argument, or wicker-man, considering his origins.