"Above all, you must fight conceit, envy, and every kind of ill-feeling in your heart"

This quote by Abraham Cahan is a pointer to strive for humbleness and compassion in our lives. It is a call to action to fight against the unfavorable emotions that can occur within us, such as conceit, envy, and ill-feeling. Conceit is an extreme pride in oneself, while envy is the feeling of bitterness towards someone else's success or belongings. Ill-feeling is a general term for any unfavorable feeling, such as anger, hatred, or bitterness.

By battling against these emotions, we can aim to be better people. We can concentrate on being simple and kind, instead of letting our pride or envy get the best people. We can likewise aim to be more understanding and caring towards others, rather than letting our ill-feelings obstruct.

Abraham Cahan's quote is a suggestion that we should make every effort to be much better individuals, and that we ought to fight against the unfavorable emotions that can arise within us. By doing so, we can develop a more positive and unified environment for ourselves and those around us.