It is better to consider assumptions as either useful or useless, depending on whether deductions made from them corresponded to reality...Since we must start somewhere, we must have assumptions, but at least let us have as few assumptions as possible.
不如去考虑假设有用与否，这取决于由它们得出的推论是否与现实相符……因为我们必须从某处开始，我们必须有一些假设，但我们的假设应该越少越好。