The soul continually puts questions about the human destiny and his dissimilarity to itself. Can a thoughtful soul endure that on one side innocent human beings live in bitterness and misery, and on the other side, people live apparently in happiness who do not deserve it? This is the big question which the human soul has to put to destiny. As long as we consider life only between birth and death, we never find an answer to this riddle.
We never find consolation for the soul. If we look, however, at the law of karma, we know that any bitterness, any misery is the result of causes which were there in former lives. Then we say on one side: what the soul experiences today as its destiny is the effect of former experiences. This cannot be anything else.
Consolation becomes this explanation immediately when we look at the future because we say: somebody who experiences something painful or bitterness and grief today can complain of his destiny not only, but he has to say to himself: bitterness, heartache have effect on the future. What is your pain today is for your future life in such a way as the pain of a child if it falls: it learns to go. Thus any grief is the cause of a rise of the soul-life, and the soul finds consolation immediately if it says to itself: nothing is without effect. The life which I experience today must bear its fruit for the future.
Source: Rudolf Steiner – GA 52 – Spiritual Teachings of Soul/World: Course V – Lecture I: What Does the Modern Human Being Find in Theosophy? – Berlin, March 8, 1904