85.One today is worth two tomorrows. 今天一天抵明天兩天。 86.One who can do everything can do nothing. 什麼都能做，什麼都不行。 87.One woe doth tread upon another's heels. 禍不單行。 88.One wrong (or
85.One today is worth two tomorrows. 今天一天抵明天兩天。
86.One who can do everything can do nothing. 什麼都能做，什麼都不行。
87.One woe doth tread upon another's heels. 禍不單行。
88.One wrong (or false) move can lose the whole game. 棋錯一著，全盤皆輸。
89.One wrong thought may cause a lifelong regret. 一念之錯可鑄終生之恨。
90.Only that which is honestly got is gain. 正當的收入才是真正的收入。
91.Only they who fulfill their duty in everday matters will fulfill them on great occasions. 只有在日常事務上盡責的人，才能在重大事情上盡責。
92.On the choice of friends. Our good or evil name depends. 朋友的選擇可影響名譽的好壞。
93.On the great clock of time there is but one word, "Now." 在偉大的時鐘上，只有一個詞，就是「現在」。
94.Open confession is good for the soul. 坦白交代，身心愉快。
95.Open not your door when the devil knocks. 不要受人的誘惑。
96.Opportunity makes the thief. 疏忽招盜賊。
97.Opportunity seldom knocks twice. 機不可失，失不再來。
98.Opportunity, sooner or later, comes to all who work and wish. 只要努力工作而有志向，機會遲早終會來臨。
99.Other men live to eat, while I eat to live. 別人為食而生活，我為生活而食。
100.Our affections are our life. -- We live by them; they supply our warmth. 我們的感情，是我們的生命，我們靠它生存，我們的溫暖是它供應。
101.Our best friends are they who tell us our faults and help us to mend them. 最好的朋友是指出我們的缺點並幫助改正的人。
102.Our bravest and best lessons are not learnt through success, but through misadventure. 最美好的教訓不是得之於成功，而是來之於不幸。
103.Our greatest glory consists not in never falling, but in rising every time we fall. 我們最大的光榮並不在於永不跌倒，而在於每次跌倒後能起來。
104.Our happiness consists not in killing others, but in sacrificing ourselves for others. 我們最大幸福並不是殺害別人，而是為別人而犧牲自己。
105.Our own actions are our security, not others' judgements. 我們的行為是自己的保證而不是別人的鑒定。
106.Our sweetest songs are those that tell of saddest thought. 最甜美的的歌是訴說最悲傷的哀思。
107.Out of debt, out of danger. 無債一身輕。
108.Out of sight, out of mind. 久違情疏。眼不見，心不煩？
109.Overdone is worse than undone. 過猶不及。
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