"Abandon what is unskillful, monks. It is possible to abandon what is unskillful. If it were not possible to abandon what is unskillful, I would not say to you, 'Abandon what is unskillful.' But because it is possible to abandon what is unskillful, I say to you, 'Abandon what is unskillful.' If this abandoning of what is unskillful were conducive to harm and pain, I would not say to you, 'Abandon what is unskillful.' But because this abandoning of what is unskillful is conducive to benefit and pleasure, I say to you, 'Abandon what is unskillful.'

"Develop what is skillful, monks. It is possible to develop what is skillful. If it were not possible to develop what is skillful, I would not say to you, 'Develop what is skillful.' But because it is possible to develop what is skillful, I say to you, 'Develop what is skillful.' If this development of what is skillful were conducive to harm and pain, I would not say to you, 'Develop what is skillful.' But because this development of what is skillful is conducive to benefit and pleasure, I say to you, 'Develop what is skillful.'"


See also: DN 12; SN 6.1.