Far from eye, far from heart.
眼不見，心不煩。
Far water does not put out near fire.
遠水救不了近火。
Faults are thick where love is thin.
一朝情意淡，樣樣不順眼。
Fear always springs from ignorance.
恐懼源於無知。
Fields have eyes, and woods have ears.
隔牆有耳。
Fire and water have no mercy.
水火無情。
Fire is a good servant but a bad master.
火是一把雙刃劍。
First come, first served.
先來後到。
First impressions are half the battle.
初次見面，印象最深。
First think and then speak.
先想後說。
Fools grow without watering.
朽木不可雕。
Fool's haste is no speed.
欲速則不達。
Fools has fortune.
呆人有呆福。
Fools learn nothing from wise men, but wise men learn much from fools.
愚者不學無術，智者不恥下問。
Forbidden fruit is sweet.
禁果格外香。
Fortune favors those who use their judgement.
機遇偏愛善斷之人。
Fortune knocks once at least at every man's gate.
風水輪流轉。
Four eyes see more than two.
集思廣益。
Friends agree best at distance.
朋友之間也會保持距離。