Ok, so I'm on my 6th game or so, playing Brazil, normal difficulty.

I've maxed out my Aesthetics tree, and it says I can buy certain Great People with faith once I hit Industrial age. I have 5k or so...I couldn't do it in Industrial. I'm in Modern, still can't do it.

I've bought GP in previous games, not a problem...but sure can't do it here. Any idea what I'm missing? They won't even show up when I go to hurry production.

Just totally stumped here.