Long before feminism had a name, Sor Juana Inés de la Cruz was already arguing for a woman’s right to think. Born in 1651 in colonial Mexico, she grew up in a world that didn’t believe girls required an education. As a child, she asked to attend university disguised as a boy, but she was refused. Since the institutions wouldn’t let her in, she simply educated herself in private, mastering everything from Latin to complex theology.

By her teenage years, her intelligence had become impossible to ignore. Scholars and officials held public examinations to test her knowledge, and she passed them repeatedly. However, she knew that in her society, marriage would mean the end of her intellectual life. She chose the convent instead. This was not out of a religious calling but was a strategy to secure the time and space to write. Within her convent cell, she managed to build one of the largest private libraries in the Americas.

She produced a massive body of poetry, plays, and philosophical essays that treated her as an intellectual equal to any man. When church authorities finally attacked her for engaging in theological debate, she responded with “Respuesta a Sor Filotea.” This text dismantled the idea that women should remain silent. Her argument was rational: if God granted women intelligence, it was a contradiction to forbid them from using it.

She famously wrote:

“One can perfectly well philosophize while cooking dinner.”

With that single line, she rejected the idea that a woman’s mind had to shrink to fit a domestic role. Eventually, the pressure from the church became overwhelming, and she was forced to sell her library and stop writing entirely. Her story ended in a gradual, forced silencing rather than a grand spectacle. Though she lived centuries before organized movements, she remains a definitive example of someone who refused to ask for permission to exist as an intellectual. She simply did it.