Virtue and profit cannot be known even by one equal (intelligent) to Brihaspati; A thing is lost when it falls into the ocean. So an advice is lost when it is not listened.
नष्टं समुद्रे पतितं नष्टं वाक्यमशृण्वति। अनात्मनि श्रुतं नष्टं नष्ट हुतमनग्निकम्॥