Did you discover it from first principles by yourself because it's a natural conclusion anyone would reach if they ponder the subject? Or because western cultu

Did you discover it from first principles by yourself because it's a natural conclusion anyone would reach if they ponder the subject? Or because western culture reflects this theme continuously through all the culture and media you've immersed in since you were a child? Also the idea is definitely not new to Descartes, you can find echoes of it going back to Plato, so your idea isn't wrong per se. But I think it underrates the effect to which our philosophical preconceptions are culturally constructed.