I think it is a mistake to think that an extensive education is incompatible with a simple faith. For instance, look at St. Thomas Aquinas. Doctor of the Church, studied philosophy, wrote thousands of pages of detailed and subtle theology, etc. When he went to bed at night, he would leave what he had written that day in front of the Tabernacle, asking Jesus to look it over and pass judgment on it. He preached a beautiful, simple homily on charity towards others. The story goes that when he was praying in front of a crucifix and Jesus asked him what he wanted, he said, “Only Thyself.” He had a massive intellect but submitted himself to his superiors and to Jesus. He died saying that what he had written was straw, acknowledging the inability of his writing to convey the greatness of God.
We’re all called to be like little children. Seems to me that simplicity of faith, simplicity of the heart, is something common to all the saints regardless of their level of education, or their knowledge of theology.
Just my two cents.