What is "simple-hearted"

Usage examples of "simple-hearted".

But it was the crowd, the great congregation filling the hall and all of Waldzell, the thousands of souls who followed the Master down the hieratic and labyrinthine ways through the endless, multidimensional imagery of the Game, who furnished the fundamental chord for the ceremony, the low, throbbing base bellnote, which for the more simple-hearted members of the community is the best and almost the only experience the festival yields, but which also awakens awe in the subtle virtuosi and critics of the elite, in the acolytes and officials all the way up to the leader and Master.

In the old days, when women had watched over the machines, some of the more simple-hearted had been found sitting rigidly at their posts, staring, long after quitting time.