Women have been driven mad, "gaslighted," for centuries by the refutation of our experience and our instincts in a culture which validates only male experience. The truth of our bodies and our minds has been mystified to us. We therefore have a primary obligation to each other: not to undermine each others' sense of reality for the sake of expediency; not to gaslight each other. Women have often felt insane when cleaving to the truth of our experience. Our future depends on the sanity of each of us, and we have a profound stake, beyond the personal, in the project of describing our reality as candidly and fully as we can to each other.