What can be explained by the assumption of fewer things is vainly explained by the assumption of more things.

Never increase, beyond what is necessary, the number of entities required to explain anything.

No more things should be presumed to exist than are absolutely necessary.

With all things being equal, the simplest explanation tends to be the right one.

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.

What can be explained by the assumption of fewer things is vainly explained by the assumption of more things.

It is vain to do with more what can be done with less.