This quote from Einstein appears in Science, Philosophy, and Religion, A Symposium, published by the Conference on Science, Philosophy and Religion in Their Relation to the Democratic Way of Life, Inc., New York, 1941.
The more a man is imbued with the ordered regularity of all events the firmer becomes his conviction that there is no room left by the side of this ordered regularity for causes of a different nature. For him neither the rule of human nor the rule of divine will exists as an independent cause of natural events.
To be sure, the doctrine of a personal God interfering with natural events could never be refuted, in the real sense, by science, for this doctrine can always take refuge in those domains in which scientific knowledge has not yet been able to set foot.
But I am convinced that such behavior on the part of representatives of religion would not only be unworthy but also fatal. For a doctrine which is to maintain itself not in clear light but only in the dark, will of necessity lose its effect on mankind, with incalculable harm to human progress.
In their struggle for the ethical good, teachers of religion must have the stature to give up the doctrine of a personal God, that is, give up that source of fear and hope which in the past placed such vast power in the hands of priests. In their labors they will have to avail themselves of those forces which are capable of cultivating the Good, the True, and the Beautiful in humanity itself. This is, to be sure, a more difficult but an incomparably more worthy task
This material was taken from the Secular Web at http://www.infidels.org/news/atheism/arguments.html#einstein
About God, I cannot accept any concept based on the authority of the Church. As long as I can remember, I have resented mass indocrination. I do not believe in the fear of life, in the fear of death, in blind faith. I cannot prove to you that there is no personal God, but if I were to speak of him (rightly him here), I would be a liar. I do not believe in the God of theology who rewards good and punishes evil. My God created laws that take care of that. It's universe is not ruled by wishful thinking, but by immutable laws.
—W. Hermanns, Einstein and the Poet—In Search of the Cosmic Man (Branden Press, Brookline Village, Mass., 1983), p.132, quoted in Jammer, p.123.
The sense of the religious, which is released through the experience of potentially nearing a logical grasp of these deep-lying world relations, is … a feeling of awe and reverence for the manifest Reason which appears in reality. It does not lead to the assumption of a divine personality—a person who makes demands of us and takes an interest in our individual being. In this there is no Will, nor Aim, nor an Ought, but only Being.
— Found in Goldman, p. 33.
Give up the idea of a personal God in favor of cultivating the Good, the True, and the Beautiful in humanity itself.