adversity makes a man wise, not rich. 逆境出人才。
a fall into a pit, a gain in your wit. 吃一塹，長一智。
experience must be bought. 吃一塹，長一智。
by falling we learn to go safely. 吃一塹，長一智
failure is the mother of success. 失敗是成功之母。
if you want knowledge, you must toil for it. 要想求知，就得吃苦。
no cross, no crown. 不經歷風雨，怎么見彩虹。
no pleasure without pain. 沒有苦就沒有樂。
no sweet without sweat. 先苦後甜。
by doing we learn. 經一事，長一智。
nothing stake, nothing draw. 不頂千里浪，哪來萬斤魚。
if you want knowledge, you must toil for it. 若要求知，必須刻苦。
the path to glory is always rugged. 通向光榮的道路常常是崎嶇的。
pleasure comes through toil. 苦盡甘來。