The appearance in the mind of undesirable and ignoble thoughts, even if they are very fleeting and only half-articulate, has an unpleasant effect upon one's self-esteem. Therefore such thoughts are often shoved aside, unattended to and unopposed. Often they are also camouflaged by more pleasing and respectable labels which hide their true nature. Thoughts disposed of in either of these two ways will strengthen the accumulated power of ignoble tendencies in the subconscious.

p. 79 - The Vision of Dhamma (1994)