胸无大志的人容易被胜利冲昏头脑；鼠目寸光…

胸无大志的人容易被胜利冲昏头脑；鼠目寸光的人稍受表扬就不知天高地厚。
An unambitious man is easily carried away by victory; a short-sighted man would have an exaggerated opinion of his abilities after being praised a little.