In the above speech, what is Voltaire’s key argument concerning freedom?

“In these times of shadow cast by tradition and dogma, I find that the pursuit of reason must guide society. Blind faith and inherited customs constrain the mind and stifle progress. It is imperative that citizens are granted the freedom to express their thoughts, beliefs, and criticisms without fear of repercussion. I argue that only through a free exchange of ideas can truth and justice prevail. The institution of religion, when offered unchecked power, often impedes the advancement of knowledge. Let the realms of thought and speech be liberated from the chains of superstition and authority. We must champion rationality and tolerance as the cornerstones of a vibrant society.”
Voltaire, Candide Discourse, 1763