Thomas Hill's technique is to contend that humans should value nature notwhithstanding their practical or aesthetical use. In nature, the human is placed as a nurturer of nature despite the fact that nature may outlive humans themselves the cycle of natural life.
The idea of a passing Golden age
Macbeth's conflict is intensified when Duncan names Malcolm as the "Prince of Cumberland", which means he is next in line for the throne.
When Macbeth says "that is a step / on which I must fall down or else o'erleap / for in my way it lies" he is saying that now Malcolm is in his way on his path for the throne and he now has to figure out a way to either jump over Malcolm or it will cause him to fall.