Entities must not be multiplied beyond necessity.

Entities should not be posited unnecessarily.

Plurality is not to be posited without necessity.

For nothing ought to be posited without a reason given, unless it is self-evident (literally, known through itself) or known by experience or proved by the authority of Sacred Scripture.

3 is a prime, 5 is a prime, and 7 is a prime. Why bother with non-prime numbers when the primes can do everything?

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

Entities are not to be multiplied beyond necessity.