I loved these two quotes posted recentely on a favorite blog by a dharma friend, Marguerite Manteau-Rao, called Mind Deep:

There is one thing that when cultivated and regularly practiced leads to deep spiritual intention, to peace, to mindfulness and clear comprehension, to vision and knowledge, to a happy life here and now, and to the culmination of wisdom and awakening. And what is that one thing? Mindfulness centered on the body. ~ Anguttara Nikaya I, 21 ~

If the body is not cultivated, the mind cannot be cultivated. If the body is cultivated then the mind can be cultivated. ~ Majjhima Nikaya 36 ~