There was an experiment in which cats were used, as soon as 2 diff cats were born 1 was put into one room the other into another room. One room was horizontally based, everything was horizontal and given to them horizontally, that was thier whole world. The other room was vertically based. When they removed the cats from the room the cat in the horizontal room would run into table legs, and only see things that were horizontal. Same with the vertical one, it was blind to horizontal things.

This is much like spirituality, we have existed in a place where it doesnt exist and that fact was embedded into our mind mostly through the destructive behavior of ego, and therefore are blind to spiritual things. Let me ask you this, the oldest memories you can think of when you were as young as you remember, were they not memories of your ego being fed and developing?