We performed this in grade school and was one of Mother's favorite quotes.
If she must teem,
Create her child of spleen, that it may live
And be a thwart disnatur'd torment to her!
Let it stamp wrinkles in her brow of youth,
With cadent tears fret channels in her cheeks,
Turn all her mother's pains and benefits
To laughter and contempt, that she may feel
How sharper than a serpent's tooth it is
To have a thankless child!
Later, Lear complains to Regan—who will turn out to be, if anything, worse than Goneril—of Goneril's "Sharp-tooth'd unkindness" and her "serpent-like" tongue (Act 2, scene 4). His snakelike daughters represent the bestiality of all women: "Down from the waist they are Centaurs. . . Beneath is all the fiends'" (Act 4, scene 6). As he plunges from indignation into madness, Lear becomes more and more horrified at the act of generation, and of his spawning such monstrous children; but he deflects self-criticism into vilification of women.