O king of kings, the indulgence of the six senses is (very) easy if purity be not its aim. Abstinence is itself difficult to acquire and it is more so if purity be not its aim. Among all the senses mind is the most dangerous.
न दुष्करमनाशित्वं सुकर ह्यशनं विना। विशुद्धिं चक्षुरादीनां षण्णामिन्द्रियगामिनाम्॥