Simpler explanations are, other things being equal, generally better than more complex ones.
It is vain to do with more what can be done with less.
No more things should be presumed to exist than are absolutely necessary.
First it must be known that only a spoken word or a conventional sign is an equivocal or univocal term; therefore a mental contentor concept is, strictly speaking, neither equivocal nor univocal.
Entities should not be posited unnecessarily.
Entia non sunt multiplicanda praeter necessitatem