Well, Sojourner Truth asks "ain't I a woman?" a grand total of four times.

But what's Truth's point here? Is she just supremely happy about being a woman? Is it her eighteenth birthday, and is she stressing the fact that she's no longer a girl? Does she want admission into Mills or Mount Holyoke?

Truth's point isn't just one point. She's actually making two points in one: that she's a) not treated like white women, despite being well, a woman and b) that she's treated as less competent than men, despite having done the same work as a man while being—you got it—a woman.