The Cultivation of Wholesome Mental States - Sayadaw U Pandita.

 

"If you can be perfect in precepts, you may appear to be a very

holy person, but inside you may be still tortured by eruptions of
impatience, hatred, covetousness, and scheming.

Therefore, the next step is bhavana, which means in Pali 'the
cultivation of exceptionally wholesome states.'

The first part of bhavana is to prevent unwholesome states
from arising.

The second part is the development of wisdom in the absence
of these states."

In This Very Life, Kandy: BPS, 1991 (p.49)