We cannot wholly rely, as though it were Medieval times, [on the notion that] the only reality is what we see in front of us. There are germs. There are changes that are happening in our planet's ecology that are happening over such a long period of time that we cannot see the changes.
![We cannot wholly rely, as though it were Medieval times, [on the notion that] the only reality is what we see in front of us. There are germs. There are changes that are happening in our planet's ecology that are](http://cdn.quoteddaily.com/images/john-hodgman/we-cannot-wholly-rely-as-though-it-were-medieval-times-on-the-notion-that-the-only-reality-is-what-we.jpg)