Besides, this aggressive confidence never has the weight that quiet belief in one's ideas has. It is a very familiar incident in the course of business men's meetings and of boys' meetings for one to propose something, the others to agree to it, and then for one quiet man to express his contrary views, and bring the assembled company over to the opposite side of the question. This reversal of opinion is caused by the fact that one man, who has been reserved until all the others have finished, has now by the force of his quiet confidence turned the whole tide the other way. Such quiet methods are real portions of good manners, and they act far more strongly than aggressiveness. The old proverb advising you to count ten before doing something on the spur of the moment is meant to prove the same point. [Illustration: STAMPS] This Department is conducted in the interest of stamp and coin collectors, and the Editor will be pleased to answer any question on these subjects so far as possible. Correspondents should address Editor Stamp Department. E. L. SMITH, 64 Sparks St., Cambridge, Mass., wishes to exchange stamps. W. A. WHEELER.--I never heard of a "Walkers Penny Post." If it is on the original letter or envelope, I should like to see it. R. BOWERS.--The stamp _Cerrado y Sellado_ is a Mexican "officially sealed" stamp. These are, properly speaking, labels, not stamps, and consequently are no longer catalogued. W. M. FOORD.--As the Olympian stamps are still in use they are worth face value only, if unused. Used they are very common. J. KRANZ.--All the leading dealers in New York sell stamps by auction at irregular intervals throughout the season. Catalogues are sent free on application. H. BUNKER.--Entire envelopes are collected by comparatively few compared with those who collect stamps. Envelopes can be bought for one-quarter, or in some instances one-tenth, the price which adhesive stamps of equal rarity would command. F. X. STAHN.--Nova Scotia stamps are not being bought up by speculators. The fact is, no one knows how many were sold by the government to the syndicate now controlling the same. One set should satisfy you under these circumstances. A. LOBENTHAL.--Join your local stamp society, if there is one. If not, then join the American Philatelic Association. A. HOWARD.--Inverted centres on U.S. stamps are extremely rare. The price quoted by you is very reasonable if the stamp is in good condition. A. SENG.--The Canadian new issue has not been definitely announced. A. THALMAN.--Philatelic literature is a feature in a few public libraries. Pittsburg set the example in this respect. It will pay you as an active collector to take the three periodicals mentioned.