Diligence is the mother of good luck. 刻苦是成功之母。

Diligence is the mother of success. 勤奮是成功之母。

Discontent is the first step in progress. 不知足是前進中的第一步。

Discretion is the better part of valour. 小心即大勇。

Disease, enemy, and debt --these three must be cut off as soon as they begin to grow. 病，仇與債這三者，一露苗頭就砍掉。

Disease of the soul are more dangerous than those of the body. 心靈上的疾病比肉體上的疾病更危險。

Diseases are the price of ill pleasures. 疾病是不正當娛樂的代價。

Diseases come on horseback, but go away on foot. 病來如山倒，病去如抽絲。

Disgraced may be he who thinks ill. 心懷不端的人是可恥的。

Do as most men do and men will speak well of thee. 為眾之所為，受眾之所夸。

Do as the Romans do(or Do as they do at Rome). 入鄉要隨俗。

Do as you would be done by. 推己及人。

Do business, but be not a slave to it. 要做事，但不要做事務的奴隸。

Dog does not eat dog. 物不傷其類。

Dogs that bark at a distance bite not at hand. 遠處叫得兇的狗，不會近身來咬人。

Dogs that run after many hares kill none. 多謀寡成。

Dogs wag their tails not so much in love to you as your bread. 狗搖尾巴，愛的是面包。

Doing is better than saying. 行勝于言。

Do in Rome as the Romans do. 入鄉隨俗。

Do not all you can, spend not all you have; believe not all you hear; and tell not all youknow. 不要為所能為，不要花盡所有，不要全信所聞，不要言盡所知。

Do not cut down the tree that gives you shade. 不要忘恩負義。

Do not despise your enemy. 萬勿輕敵。

Do not give a dog bread every time he wags his tail. 不要有求必應。

Do not praise a day before sunset. 切勿褒貶過早。

Do not run too fast after gain. 不要見利就拼命追。

Do not speak of your happiness to one less fortunate than yourself. 不要向不如你幸運的人述說你的幸福。

Do not swap horses when crossing a stream. 處在危難中，不宜大更動。

Do no through fear of poverty surrender liberty. 不要因為怕貧苦而放棄自由。

Do not to others what you do not wish them to do to you. 己所不欲，勿施于人。

Do not wash dirty linen in public. 家丑不可外揚。

Don''t cast out the foul water till you bring in the clean. 清水未來，莫潑贓水。

Don''t count your chicken before they are hatched. 不要過早樂觀。

Don''t climb a tree to look for fish. 勿緣木求魚。

Don''t cross the bridge till you get to it. 不要杞人憂天。

Don''t fly till you wings are feathered. 羽毛未豐不要飛。

Don''t cry out before you are hurt. 還沒受苦，就別叫苦。

Don''t halloo till you are out of the wood. 沒有脫離危險不要先歡呼。

Don''t have thy cloak to make when it begins to rain. 切莫臨時抱佛腳。

Don''t keep all your eggs in one basketball.勿孤注一擲。

Don''t put off till tomorrow what should be done today. 今日事，今日畢。

Don''t speak all you know, but know all you speak. 不要盡言所知，而要盡知所言。

Don''t teach your grandmother to suck eggs. 休要班門弄斧。

Don''t throw out your dirty water before you get in fresh. 清水未打來，贓水莫倒掉。

Don''t trouble trouble until trouble troubles you. 不要自尋煩惱。

Don''t whistle until you are out of the wood. 沒有脫離險境，不要過早高興。

Do one''s level best. 盡力而為。

Dot the i''s and cross the t''s. 一點一劃，循規蹈矩。

Doubt is the key of knowledge. 懷疑乃知識的鑰匙。

Do well is better than say well. 說得好不如做得好。