On the Dangers of Spiritual Presumption

Read, if you want, the Ecclesiastical History by Meletios of Athens, and see how many teachers Origen and thousands of others were at first great luminaries of the Church possessing extensive learning. But since they gave themselves over to the sea of knowledge before receiving in hesychia the purification of their senses and the peace and tranquility of the Spirit, they sank in the ocean of the Holy Scriptures. They thought that their scholarly learning was sufficient. Thousands were lost and anathematized by the Councils, of which they had previously been champions. Read and you will see.