The future is female
The phrase The future is female is a common feminist slogan. The plain meaning of these words is that men will need to take a step back, apparently for alleged transgressions men committed against women in former times.
Feminists assert that this slogan actually means that the future will be egalitarian. Most feminists are apparently unaware that the slogan originated among separatist feminists in the 1970s and was intended to be an expression of female supremacy.
The Washington Post reports that the saying first appeared as a separatist feminist slogan in the 1970s:
In 1975, photographer Liza Cowan captured an image of her then-girlfriend, singer-songwriter Alix Dobkin, wearing a white T-shirt that bore the slogan over a powder-blue turtle neck. Cowan published it as part of her slide show, “What The Well Dressed Dyke Will Wear,” and feminists claimed Labyris’ words, wearing them on clothing and pins to rallies and protests. 
The phrase has been attributed specifically to Sally Miller Gearhart as a result of her essay The Future--If there is one--Is Female. A quote from the essay is below.
"The proportion of men must be reduced to and maintained at approximately 10% of the human race."