It does not follow that perfect blending of temperamental conditions will produce a happy marriage. This is the physiological foundation always of a correct relation, but there are other considerations quite as likely to produce important modifications. It does not follow from this law, that a blonde heiress should marry her father's coachman, though he may be a perfect type of the brunette. We should not advise a graduate of one of our cosmopolitan universities to marry an uncultivated country maiden, even though their temperaments were perfectly balanced. We expect our subjects to exercise common sense in the application of our advice, and marry with due regard to the purposes of the union socially, financially and physiologically. A young gentleman or lady may take my written description of the proper complementary character, and in any village of two thousand inhabitants there will presumably be a half dozen eligible persons sufficiently corresponding to the temperamental description. Our candidate will consider the claims of the six with probably the following result: He will reject No. 1, because she is too old; No. 2, because she is too young; No. 3, because she is diseased; No. 4, because she has insufficient culture. He may profitably hesitate a year between Nos. 5 and 6, but ultimately prefer No. 6 for reasons which he has discovered in that time, and marry happily, and with the proud satisfaction of having married intelligently. "But," says some objector, "you would have marriage reduced to a matter of cold calculation. You leave out all sentiment and _love_." Now, hold on, my friend, and we will see whether that is true or not. What is this sentiment, this love, which most people seem to think desirable in matrimony, and which others, we may add, hold in profound contempt. Love is the impulse of desire toward that which gratifies it. A young man loves a young woman because he sees something in her character, her personal beauty, her mental attributes, which gratifies him. For precisely the same reason the young lady reciprocates the sentiment. Now the question simply reduces itself to this: Shall this sentiment, this love, be founded on a complete and accurate knowledge of what is necessary to the complete gratification of the whole nature, or shall it be founded upon mere caprice or whim, the gratification of a mere fragmentary instinct which has never been educated to the comprehension of its true needs? Ponder on these questions for a few moments and you will realize that, instead of eliminating the sentiment of love from the question of matrimonial selection, I have really introduced you to a grander, broader, better ideal of true love than you have ever comprehended before.