You seem to be referring to Hamlet (1.2.76-86). Hamlet is wearing all black clothing and is still in deep mourning over the death of his father. His mother, who has since married Claudius, asks him to "cast thy nighted color off" and asks, "Why seems it so particular with thee?" To this Hamlet replies: "Seems, madam! nay it is; I know not 'seems'. . . . These indeed seem, / For they are actions that a man might play, / But I have that within which passeth show; / These but the trappings and the suits of woe." The word "grief" occurs in line 82 (in my text): "Together with all forms, moods, shapes of grief . . ." I hope this is the correct citation and answers your question.