One of the biggest challenges of the study and practice of ethics is that of the moral dilemma, e.g. how should a compassionate person deal with injustice? This paper attempts to resolve this thorny issue from the perspective of Buddhist philosophy. I firstly introduce the 14th Dalai Lama's distinction between act and actor and suggest a way to denounce wrongful acts without harboring hatred towards the perpetrator. Secondly, I argue that the philosophical grounds of this distinction can be traced back to ancient Buddhist texts on Non-Self and Emptiness, which take all things as being in a constant state of change. Thirdly, I point out that a unique feature of the 'empty ethics' of Buddhism is that it inspires a middle way approach which allows for congruity between justice and compassion, between the realistic and the idealistic, and between rationality and sentimentality. Based on this, I suggest that it has much to contribute to contemporary ethics.