in extremely simply words – we either are in the accepting state – this state born from security and the natural desire for love is incapable of seeing any potential evil – or we are in the protective, "closed-gate" state – this state born from fear, anxiety, often experience-based, sees only potential danger, hence in this state it is perfectly reasonable to shut out all love and in fact be quite volatile, as sometimes the only defense is offense – Oh’ how fortunate is s/he who matures