Perception of human brain is limited to the horizon of experiences it directly saved so far and can only be widened by absorbing passed on essays, stories or mind altering substances of contemporary witnesses of different ages.
actually, there is another way...ever been to silkroad?
ftfy
human race can profit from a wide range of different tools in this regard.
drugs can help raising the awareness, however transmitted information via conversation or books and other media builds the fundamentals for succesful reflection and seeing the context.
remembering a quote here:
"Apes don't read philosophy."
"Yes they do. They just don't understand it."