"How blunt are all the arrows of thy quiver in comparison with those of guilt"

In Robert Blair's quote, "How blunt are all the arrows of thy quiver in comparison with those of guilt", there is a profound expedition of the nature and impact of guilt compared to other kinds of psychological or existential threats. At a surface level, the quote utilizes a metaphor of arrows in a quiver, which traditionally symbolizes weapons or means of attack, to check out the potency of various psychological experiences. Here, "thy quiver" represents life's adversities or obstacles-- perhaps worry, pain, stress, or dissatisfaction-- allusions to the myriad battles one might face.

Blair suggests that these metaphorical arrows are "blunt" when compared to the piercing sharpness of regret. In stating this, he elevates guilt as an uniquely effective and damaging force, more acute and penetrating than normal life's difficulties. This statement implies that regret has an intense ability to impact an individual's conscience, causing long-lasting inner chaos and reflection, exceeding other psychological pains or fears in its capacity to wound the mind.

Guilt, as Blair seems to argue, is more personal and invasive, often self-inflicted or self-perceived, which can penetrate deeper into the soul than external obstacles. It prompts self-questioning and a questioning of one's moral framework, leading to a moral reckoning that other hardships might not. The quote might also imply that guilt withstands, gnawing at the person gradually, whereas other challenges may be more fleeting or shallow in contrast.

This interpretation reflects on human psychology and ethical approach, highlighting how regret is intrinsic and frequently intensified by one's values and ethical requirements. The existential weight of regret can form behavior and decision-making much more than external dangers or difficulties, highlighting the profound and long-lasting nature of this specific psychological experience in human life. Blair's words, for that reason, invite consideration on how guilt impacts one's conscience and general life experience, recommending a powerfully reflective component to its existential effect.