In plain words
It is only between two pains that Śānti comes to us. Without going through pains one cannot attain Śānti. “Today I have recognised Satya,” said the Buddha. What is this Satya? To purify the five senses in man: that is Satya. If these five senses are made unclean, what use is any number of sādhanas? If you fill a tank with dirty water and turn the tap, only dirty water comes. But clean water will not come. Your heart is the tank. The senses are the taps. When you fill the tank of the heart with impure feelings, your looks, your thoughts and your words become impure. Only when you clean this tank of the heart, fill it with sacred vision, fill it with sacred feelings, fill it with sacred words and practise sacred sādhana does it become a sacred tank. Hence Jayadeva:
O tongue that knows taste and is fond of sweetness, I tell you what is true, what is good, what is highest: say over and over the sweet syllables, “Govinda, Dāmodara, Mādhava.”
O tongue! Wake up. What did God give you to me for? Is it to eat the tasty dishes cooked at home? No, no. To protect the body one must eat something. It was not made for taste. What is taste to you? Divine words are your taste. God's Name is your taste; think of whatever Name you like. God is one. If you want to eat that Name, satyaṃ brūyāt, priyaṃ brūyāt: that is, eat both Satya and Dharma. Whatever you speak, speak only the truth. Whatever you do, practise it as the Dharma of Ahiṃsā. Do not hurt anyone's heart. If the body is hurt, you can put on medicine, bind it up and make it well. A wound to the body can be healed. A wound to the heart from words does not heal.