Entities are not to be multiplied beyond necessity.
Whenever two hypotheses cover the facts, use the simpler of the two.
It is vain to do with more what can be done with less.
My God is the green tide in the spring leaves the redness of cherries high in the air the excitement of shooting stars the song of birds in summer branches the sunrise on a winter's morning the name of everything we don't understand.
Entities must not be multiplied beyond necessity.
Of two equivalent theories or explanations, all other things being equal, the simpler one is to be preferred.