45 To show that this division is adequate, I propose this third generalization well known to Aristotle: (Fifteenth conclusion) Plurality must never be assumed without necessity.
45 To show that this division is adequate, I propose this third generalization well known to Aristotle: (Fifteenth conclusion) Plurality must never be assumed without necessity.
45为了证明这一划分是恰当的，我引用亚里士多德广为人知的第三个概括：（第十五个结论）如无必要，勿增原因。