Martin Luther on the Parable of the Sower

"True it is unpleasant to preach to those who treat the Gospel so shamefully and even oppose it...What business is it of mine that many do not esteem it? It must be that many are called but few are chosen. For the sake of the good ground that brings forth fruit with patience, the seed must also fall fruitless by the wayside, on the rock and among the thorns; inasmuch as we are assured that the Word of God does not go forth without bearing some fruit, but it always finds also good ground; as Christ says here, some seed of the sower falls also into good ground, and not only by the wayside, among the thorns and on stony ground. For wherever the Gospel goes you will find Christians. "My word shall not return unto me void" (Is. 55:11).”