What is Bisexuality?

"Is bisexuality a "third kind" of sexual identity, between or beyond homosexuality and heterosexuality? Or is it something that puts in question the very concept of sexual identity in the first place? Why, instead of hetero-, homo-, auto-, pan-, and bisexuality, do we not simply say "sexuality"? And does bisexuality have something fundamental to teach us about the nature of human eroticism?"
—from Vice Versa: Bisexuality and the Eroticism of Everyday Life, by Marge Garber


"Bisexuality means I am free and I am as likely to want to love a woman as I am likely to want to love a man, and what about that? Isn't that what freedom implies?"
—June Jordan 

"Bisexuality isn't more complicated than that - "attraction to more than one gender." It's not incompatible with identifying as gay, either. Bisexuality is proof that sexuality isn't "either/or," it's "and."
—The Bisexual Index