Nothing that helps the whole can truly hurt any part of it. All natures share this trait — they contain nothing that harms themselves. The universe has an even greater advantage than other natures. No outside force can make it act against its will. So the universe would never create or nurture anything that could damage itself.
For nothing that is behoveful unto the whole, can be truly hurtful to that which is part of it. For this being the common privilege of all natures, that they contain nothing in themselves that is hurtful unto them; it cannot be that the nature of the universe (whose privilege beyond other particular natures, is, that she cannot against her will by any higher external cause be constrained,) should beget anything and cherish it in her bosom that should tend to her own hurt and prejudice.