Men at their birth are naturally good. Their natures are much the same; their habits become widely different. Translation shamelessly copied from here.
Confucius said, “To learn and to practice what is learned time and again is pleasure, is it not? To have friends come from afar is happiness, is it not? To be unperturbed when not appreciated by others is gentlemanly, is it not? Translation from here.
Confucius said, “To learn without thinking is labour in vain. To think without learning is desolation.” Translation from here.
When you know a thing, to hold that you know it; and when you do not know a thing, to allow that you do not know it – this is knowledge. Translation from here.