Fields have eyes, and woods have ears.
Fire and water have no mercy.
Fire is a good servant but a bad master.
First come, first served.
First impressions are half the battle.
First think and then speak.
Fools grow without watering.
Fool's haste is no speed.
Fools has fortune.
Fools learn nothing from wise men, but wise men learn
much from fools.
Forbidden fruit is sweet.
Fortune favors those who use their judgement.
Fortune knocks once at least at every man's gate.