You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending You can't be ungrateful; those who cross rivers and tear down bridges don't have a good ending