We have such a lumber of useless old ethical codes to get rid of, and such innumerable practical suggestions for race betterment, that we hardly know where to begin. In the _Eugenic Review_ for October, 1909, there is an excellent paper by Mr. Havelock Ellis, which explains a newly discovered and harmless operation which can be performed without making the slightest difference to an individual’s happiness. This operation would prevent him or her from ever becoming a parent. It is hoped that it may some day be used in cases where the heredity is hopelessly bad. It would save a great deal of public expense in cases where the dangerous person would otherwise have to be kept under constant supervision. The great benefit of the discovery is that it has none of the unfortunate effects which often follow from the practice of more Eastern methods of sterilizing the unfit. Contact with radium has also been found to lead to temporary sterility. But although stamping out the worst class of disease and imbecility in one generation would be a tremendous benefit, it is not the only remedy proposed. The encouragement and training of fit men and women--I mean the education in the laws of sexual health--would do a great deal to save the next generations from many ills that are brought upon it by the sheer ignorance of its parents. Here, again, we have to fight the silly conspiracy of silence which leaves schoolboys and schoolgirls to struggle through the early temptations of life without a word of warning from responsible people who have studied the subject of sex. There is no doubt that the world at present is full of motherly women who have no chance of becoming mothers, and of unmotherly women who have children that they do not want, or more children than they want. It would be a great advance if these arrangements could be readjusted by some slight change of public opinion, guided by the obvious facts of heredity. For instance, it is a fact that some women are very fit to be mothers, and are unattractive as wives. For others, attractive to men as they often are, it is a sin to become mothers. A tuberculous woman is apt to have a much larger family than a normally healthy woman, and that tendency ought to be modified by surgical aid. Even these few suggestions acted upon would help to make the world less full of pain and sorrow. But we are full of prejudices against these improvements. The old marriage laws, the old ideas of right and wrong remain; religious prejudice lasts far longer than religion; and the world moves on, and everyone hears of improvements that might be made quite easily. But nothing is done because of a public opinion which everyone supposes to exist, but is really a bugbear invented by the Press on the strength of a few letters from the sort of people who write letters of protest to the public libraries. A hundred letters impress an editor, because he forgets the millions of people who do not write letters, but pay all the same.