Knock... and ask your heart what it doth know. Author: William Shakespeare Copy Quote More from William Shakespeare “To hell, allegiance! Vows, to the blackest devil!Conscience and grace, to the p…” “Good night, good night! parting is such sweet sorrow, That I shall say good nig…” “All love's pleasure shall not match its woe.” “For this relief much thanks. 'Tis bitter cold, and I am sick at heart.”