Exposure

     For the most part, nature is friendly to us; otherwise, our species would not have survived.  Nature, however, can also be dangerous when we expose ourselves to extreme temperatures, too much sun, harmful plants, insects, and animals, plus unhealthy bacteria, viruses, and diseases.  We also polute the air, water, and  soil which exposes us to other dangers.  Consuming harmful substances can also expose our bodies to poor health. 
     Our mental state is also affected by overexposure and underexposure.  When we allow false or exaggerated ideas to flow into our mind and block out a variety of good ideas, our thinking can become stagnant and dangerous.  The extreme heat of emotion can burn out logic.  A cold heart can freeze out empathy.  Our minds can become poisoned with unhealthy ideas.  Exposure to bad behavior may tempt some people to lower their standards; whereas, exposure to good may help improve our lives. 
     Just like a camera needs correct exposure to produce a good photo, our own eyes need good light to see our world.  Our minds also need beneficial exposure to understand that world.