The interplay of consciousness and energy at different levels gives rise to creation, both seen and unseen, with its numerous forms, vibrations and patterns. The same interplay exists in the human microcosm, the grossest level being the physical body. The more subtle levels are experienced through a combination of yantras, geometric patterns which unfold the evolution of the elements; mantras, sound vibrations leading to transcendence; and mandalas universal patterns. This book is a selection of the more potent yantras, mandalas and mantras useful for a spiritual aspirant.