A leopard cannot change it's spots. 江山易改，本性難移。
Never put off till tomorrow what may be done today. 今日事，今日畢。
Penny wise, pound foolish. 小事聰明，大事糊塗。
What the mind can conceive, it can achieve. 心想事成。
All or nothing. 寧為玉碎，不為瓦全。
To see is to believe. 眼見為憑。
Two heads are better than one. 三個臭皮匠，勝過壹個諸葛亮。
Well begun is half done. 好的開始是成功的壹半。
Where there is a will, there is a way. 有誌者事竟成。
Where there is smoke, there is fire. 無風不起浪。
While there is life, there is hope. 留得青山在，不怕沒柴燒。
You can not sell the cow and drink the milk. 魚與熊掌不能兼得。
You can't judge a book by its cover. 人不可貌相；海水不可鬥量。
You got what you pay for. 壹分錢壹分貨。
Bad news has wings. 壞事傳千裏
Beft to hear, slow to speak. 多聽少說
better early than late. 寧早勿
Business is business. 公事公辦
Few words are best. 少說為妙