class Nirvana:
    """
Nirvana is a central concept in Buddhism that represents the ultimate goal of the spiritual path. Some characteristics of Nirvana include:

Liberation: Nirvana represents the ultimate liberation from suffering and the cycle of rebirth.
Non-attachment: Nirvana is characterized by a complete lack of attachment to material possessions, ideas, and desires.
Unity: Nirvana represents a state of unity with the universe and all beings.
Peace: Nirvana is characterized by a profound sense of peace and tranquility.
Enlightenment: Nirvana is the state of ultimate enlightenment, characterized by a deep understanding of the nature of reality.    
    """
    def __init__(self, liberation, non_attachment, unity, peace, enlightenment):
        self.liberation = liberation
        self.non_attachment = non_attachment
        self.unity = unity
        self.peace = peace
        self.enlightenment = enlightenment

    def cultivate_non_attachment(self):
        # Code to cultivate a complete lack of attachment to material possessions, ideas, and desires
        pass

    def experience_unity(self):
        # Code to experience a state of unity with the universe and all beings
        pass

    def cultivate_peace(self):
        # Code to cultivate a profound sense of peace and tranquility
        pass

    def attain_enlightenment(self):
        # Code to attain the state of ultimate enlightenment, characterized by a deep understanding of the nature of reality
        pass
