49.Fools rush in where angels fear to tread. 智者裹足不前，愚者鋌而走險。
50.Fools will be fools. 笨蛋總是笨蛋。
51.Fools will be meddling. 愚者總好無事生非。
52.For age and want save while you may; no morning sun lasts a whole day. 為了年老和急須，要及時積蓄，因為早晨的太陽，不會整天照耀。
53.For a lost thing care nothing. 一事之失，不必介意。
54.Forbidden fruit is sweet. 禁果分外甜。
55.Force can never destroy right. 暴力絕不能摧毀正義。
56.Forget not that you are a man. 不要忘記你是一個人。
57.Forget others' faults by remembering your own. 想想自己的錯，就會忘卻別人的過。
58.Forgive and forget. 不念舊惡。
59.Forgive others but not yourself. 待人寬，對己嚴。
60.Fortune favours fools. 傻子有傻福。
61.Fortune favours the bold. 勇者天祐。
62.Fortune is fickle. 天有不測風雲，人有旦夕禍福。
63.Fortune is good to him who knows to make good use of her. 知道利用幸福的人才有幸福。
64.Fortune knocks once at least at every man's door. 人人都有鴻運高照之日。
65.Fortune often rewards with interest those that have patience to wait for her. 只要有耐心，總會走好運。
66.Fortune smiles upon the brave and frowns upon the coward. 幸運喜歡勇敢的人，而不喜歡怯懦的人。
67.Fortune to one is mother, to another is stepmother. 命運對一種人如親娘，對另一種人卻是晚娘。
68.Four eyes see more than two. 人多識廣。
69.Friendless is the dead. 沒有朋友者，等於是死人。
70.Friends are like fiddle-strings, they must not be screwed too tight. 朋友像琴弦，不能太擰緊。
71.Friends are lost by calling often and calling seldom. 交往過密過疏，都會失去朋友。
72.Friends are thieves of time. 交朋友，費時間。
73.Friendship cannot stand always on one side. 來而不往非禮也。
74.Friendship is love with understanding. 友誼是愛加上諒解。
75.Friendship multiplies joys and divides griefs. 友誼可以增添歡樂，可以分擔憂愁。
76.Friendship ---- one soul in two bodies. 友誼是兩人一條心。
77.Friendship should not be all on one side. 友誼不該只是單方面的事。
78.Friendship the older it grows the stronger it is. 友誼地久天長。
79.Friends may meet, but mountains never greet. 朋友可相逢，高山永分離。
80.Friends must part. 天下無不散之筵席。
81.From a little spark may burst a mighty flame. 星星之火可以燎原。
82.From hearing comes wisdom; from speaking, repentance. 多聽增智慧，多言生後悔。
83.From saving comes having. 富有來自節約。/
84.From short pleasure long repentance. 痛快一時，悔恨終身。
85.From the father comes honour; from the mother, comfort. 榮譽由父次，安慰由母與。
86.Frugality is an estate alone. 僅僅節約就是一筆財產。
87.Fruit ripens not well in the shade. 陰涼處的果子不會成熟。
88.Full belies make empty skulls. 大腹便便，頭腦空虛。liuxuepaper.com