BG 2.62-64
Man, musing on the objects of sense, conceiveth an attachment to these; from attachment ariseth desire; from desire anger cometh forth; From anger proceedeth delusion; from delusion confused memory; from confused memory the destruction of Reason; from destruction of Reason he perishes. But the disciplined self, moving among sense-objects with senses free from attraction and repulsion, mastered by the Self, goeth to peace.