Occams razor states that explanatory entities must not be multiplied unnecessarily

Evidence

This maxim says: ‘Entities are not to be multiplied without necessity.’ Although he did not say this, he said something which has much the same effect, namely: ‘It is vain to do with more what can be done with fewer.’ — Bertrand Russell, History of Western Philosophy, 1790

Categorization

• XREF: XREF connects to Ockham’s razor in modern philosophy and science.
• corroborated: 2 independent passages support this claim — Bertrand Russell, History of Western Philosophy, 1790