First keep the peace within yourself, then you can also bring peace to others.

Be not angry that you cannot make others as you wish them to be, since you cannot make yourself as you wish to be.

The good devout man first makes inner preparation for the actions he has later to perform. His outward actions do not draw him into lust and vice; rather it is he who bends them into the shape of reason and right judgement. Who has a stiffer battle to fight than the man who is striving to conquer himself.

And when he is out of sight, quickly also is he out of mind.