Nyanaponika Thera quotes:

Equanimity is a perfect, unshakable balance of mind.

Mindfulness, though so highly praised and capable of such great achievements, is not at all a "mystical" state, beyond the ken and reach of the average person. It is, on the contrary, something quite simple and common, and very familiar to us.

Two thoughts cannot coexist at the same time: if the clear light of mindfulness is present, there is no room for mental twilight.