The Church in Ephesus: Big Heads, Shriveled Hearts

Jesus' first letter in Revelation 2 is to the church in Ephesus. Through testing and trial they have maintained sound doctrine, but in the midst of it they abandoned their love of Christ. While their heads had grown large, their hearts had shriveled. Are we prone to the same shriveled hearts? Are we more concerned with knowledge for knowledge's sake than we are for knowledge that reveals Christ and gives depth to our love? How can we remember the love we had when we first met Christ?