First come, first served.先来先卖.

First impressions are half the battle.初次见面，印象最深。

First impressions are most lasting¹.最初的印象最为持久.

First think and then speak.先想后说。

First think, and then speak.三思而后言.

First try, and then trust.试了才能相信.

Fish begins to stink² at the head.上梁不正下梁歪.

Flattery brings friends, but the truth begets³ enmity.奉承惹人喜，直言招人仇.

Follow love and it will flee, flee love and it will follow thee.追求爱情，它要逃走；逃避爱情，它会跟你.

Fools grow without watering.笨蛋自然成，无需浇水勤.

Fools has fortune.呆人有呆福。

Fool's haste is no speed.欲速则不达.

Fools have fortune.戆人有戆福.

Fools learn nothing from wise men, but wise men learn much from fools.愚者不学无术，智者不耻下问。

Fools make feasts and wise men eat them.愚者设筵，智者赴宴.

Fools never know when they are well off.傻瓜永远不知道他们何时能享福.

Fools rush in where angels fear to tread.智者裹足不前，愚者铤而走险.

fools seldom differ.小人之见岂有差异。

Fools will be fools.笨蛋总是笨蛋.

Fools will be meddling⁴.愚者总好无事生非.

For a lost thing care nothing.一事之失，不必介意.

For age and want save while you may; no morning sun lasts a whole day.为了年老和急须，要及时积蓄，因为早晨的太阳，不会整天照耀.

Forbidden fruit is sweet.禁果分外甜.

Force can never destroy right.暴力绝不能摧毁正义.

Forget not that you are a man.不要忘记你是一个人.

Forget others' faults by remembering your own.想想自己的错，就会忘却别人的过.