Fortes fortuna adiuvat - Fortune favors the brave. (Terence)
Fortes fortuna iuvat - Fortune favours the brave
Fortiter fideliter forsan feliciter - Bravely, faithfully, perhaps successfully

Fortiter in re, suaviter in modo

Resolutely in action, gently in manner. (To do unhesitatingly what must be done but accomplishing it as inoffensively as possible)

Fortitudine vincimus - By endurance we conquer
Fortius quo fidelius - Strength through loyalty
Fortuna amicos parat, inopia amicos probat - The fortune is preparing friends, the abundance is testing them
Fortuna vitrea est; tum cum splendet frangitur - Fortune is glass; just when it gleams brightest it shatters
Fortuna caeca est - Fortune is blind. (Cicero)
Fortunatus sum! Pila mea de gramine horrido modo in pratum lene recta volvit! - Isn't that lucky! My ball just rolled out of the rough and onto the fairway!