The truth is that the curtness of the Commandments is an evidence, not of the gloom and narrowness of a religion but of its liberality and humanity. It is shorter to state the things forbidden than the things permitted precisely because most things are permitted and only a few things are forbidden. An optimist who insisted on a purely positive morality would have to begin by telling a man that he might pick dandelions on a common and go on for months before he came to the fact that he might throw pebbles into the sea. In comparison with this positive morality the Ten Commandments rather shine in that brevity which is the soul of wit. But of course the fallacy is even more fundamental than this.
Negative morality is positive morality, stated in the plainest and therefore the most positive way.
If I am told not to murder Mr. Robinson, if I am stopped in the very act of murdering Mr. Robinson, it is obvious that Mr. Robinson is not only spared, but in a sense renewed, and even created. And those who like Mr. Robinson, among them my reactionary romanticism might suggest the inclusion of Mrs. Robinson, will be well aware that they have recovered a living and complex unity. And similarly, those who like European civilisation, and the common code of what used to be called Christendom, will realize that salvation is not negative, but highly positive, and even highly complex. They will rejoice at its escape, long before they have leisure for its examination. But, without examination, they will know that there is a great deal to be examined, and a great deal that is worth examination.