What is the the quote mean when the heart is at peace for and against are forgotten?

The quote suggests that when a person achieves inner peace, they are able to let go of conflicts, grievances, and dualities—both for and against something. In this state of tranquility, judgments and oppositions lose their significance, allowing for acceptance and harmony within oneself. Essentially, it highlights the transformative power of peace in transcending negativity and fostering a more unified perspective.