“We don't even know what species are out there, for the most part, particularly when you get down to the microbes and very small invertebrates. They make up the mass of the organisms around us, including the soil we depend on, the soil of cornfields as well as hardwood forests. We haven't taken ecology to the point where we can even make a crude prediction of what's going to happen when we've reduced the living world down to a certain level.”
![“We do not know how much of the environmental change is due to human activities and how much [is due] to long-term natural processes over which we have no control.” quote by Freeman Dyson](https://sms4smile.com/quotes/img-quotes/8c1/freeman-dyson-1435_activity_we-do-not-know-how-much-of-the-environme_1467450.jpg)
