Some say that spirituality is a way of attaining a better kind of happiness, transcendental happiness. Others see it as a benevolent way to develop power over others or as a way to acquire magical powers so we can change our bad world into a good world. All of these points of view are irrelevant to the Buddhist approach. According to the buddhadharma, the Buddhist teachings, spirituality means relating with the working basis of one’s existence, which is one’s state of mind.
From Chögyam Trungpa’s “The Four Foundations of Mindfulness” in A Beginner’s Guide to Meditation: Practical Advice and Inspiration from Contemporary Buddhist Teachers, pages 36–37