Macbeth:"it is too full o' the milk of human kindness

In context, Lady Macbeth is referring to her husband when she says the line, Yet doe I feare thy Nature, It is too full o’ th’ Milke of humane kindnesse." Lady Macbeth is referencing her husband's goodness, and in turn, questioning his ability to do the deed... to kill King Duncan. The "milke of humane kindnesse" is something she sees as a flaw in her husband.... she is questioning his manliness.... proclaiming him to be weak.

Lady Macbeth says the line "Yet do I fear thy nature; It is too full o' the milk of human kindness" in William Shakespeare's play "Macbeth." Lady Macbeth is speaking about her husband, Macbeth, and expressing her concern that his kind and compassionate nature might prevent him from taking the necessary actions to seize the throne, specifically referring to the murder of King Duncan. She believes that Macbeth's innate goodness and compassion make him too weak and hesitant to carry out the deed.