What does it mean to know something? What does it mean to prove something? And how are the two connected? Cara-Julie Kather explores Mathematics as a way of thinking and being in the world. She investigates Mathematics in its conceptual relation to Western understandings of the Rational and the Human, and proposes possibilities of subverting Western Mathematics and of forming different mathematical practices. To engage in decolonial-feminist re-writings of the Rational and the Human requires to re-write mathematical practice too. This study seeks to inspire such practices of re-writing thinking and being – in the realm of the mathematical and beyond.