The perfection of meditation keeps the mind alert and poised, constantly attending to the state of mind.
It is the key to developing both the four previously mentioned perfections that comprise the mode of the Bodhisattva’s action, and the following perfection of discriminating awareness that is the Bodhisattva’s understanding.
Meditation is the means by which the ultimate power of understanding and the relative power of mind-control are attained.
Meditation practice includes the development of composure (samatha) and insight (vipasyana), the basis of further progress.
These practices involve a withdrawal of mind from its functions and its emotional entanglements and conceptualizations.
Thus it is brought to union with the irreducible basis of all name and form.
Tarthang Tulku Rinpoche
Calm and Clear