My understanding is that all forms in creation can be said to have a vibrational equation that defines them in any moment - however, the forms are just that - forms. The actual 'key to life' in that sense is not so much the forms, but is in understanding the essence of the origin of the vibrations and also that which is vibrating ;)

Through contemplation, it can be found that the least physical aspect we tend to experience is our mind and associated feeling parts. From my understanding, the origin of the vibrations is mental and the essence that is vibrating is the emotional will (yang and yin).