The swords are a difficult suit in that they symbolise a weapon which signifies pain, anger and destruction.  As a rule they represent the intellect, including our thought and decision making processes.   Swords belong to the element of air and just as air moves constantly, the mind never rests.  The mind sees so many sides to a situation, it constantly twists and turns in an effort to understand and derive wisdom.  However, the stormy side of air distracts us from our ability to focus on what really matters in terms of our spiritual path, often it misunderstands what it sees and becomes lost in a deceptive dark cloud, fighting destructively against it very own illusion.