The empire's reputation as an oasis of learning and knowledge grows. Together with the reigning peace, philosophers from faraway lands flock to your cities to exchange ideas. One has studied that great fiery visitor in the heavens that rises and sets without fail every day. They have proven the sun is an orb a vast distance from our world and not a celestial god. Should you open your people's eyes to these new vistas?
The people should learn the truth, but should war break out we should be ready for accusations of heresy.
True knowledge can be a dangerous thing if it weakens our faith.