It is old, Sajjad, and is really not used in speech ; therefore the hesitation ...
but ... 'one' or 'oneself' is an effective, if not antiquated, way of getting around all of the fashionable 'sexism' of our time.
Be a philosopher ; but, amidst all your philosophy, be still a man.
~ David Hume
Chaque homme a des devoirs envers l'homme en tant qu'homme.
~ Henri Bergson