Transcendental meditation is one particular form of mantra meditation that allows your mind to experience progressively abstract fields of awareness. And ultimately you settle down in the space between your thoughts. The space between your thoughts is pure consciousness, and it's a field of possibilities. It's a field of creativity. It's a field of correlation. It's also a field of uncertainty. It's also a field where intention actualizes its own fulfillment. So that meditation allows you to contact this field, which is very primordial - the ground state of our existence.