I. Thou shalt refrain from the belief that fly tying will save you money. Tyeth thy flies for the sake of good health and well-being.
II. Thou shalt not covet thy fishing partner's wife's Rooster, nor his wife's Hen nor her other features such as ginger hackles, luxurious beads, finger nail polish or other covetous objects of desire!
III. Thou shalt not crowd the front of the hook. Leave ye not less than 1/3 of the hook shank for the most heavenly head.
IV. Honor one's vice with proper hook placement so it may last long upon the desk space ye have created. Keepeth one's hook a distance equal to at least one hook wire diameter between the hook and the jaw edge.
V. Remember the stormy day, to keep it open for your flies, for they will be useful in days ahead. In it you shall labor the fruits of glorious flies for the likeness of thy trout.
VI. Thou shalt let there be good lamp light for the health of thy eyes and the magnificence of thy flies.
VII. Thou shalt keepeth thy wine at arms length and solvents with their caps on at the time of thy labor, foreth to protect the holiness of one's fly tying altar.
VIII.Thou shalt keepeth proper tension on thy thread without breakage or loose adherance. Use thy weight of ye hanging bobbin for good measure.
IV. Thou shalt live by fine and sharp scissors, no less; and it shall come to pass when thou shall have dominion over thy flies.
X. Thou shalt not reveal to the world the Holy Grail. Mankind has sought the perfect fly that always catches fish. We know you have it so to reveal it would render the fly box to contain only one, thus ruining my day.
Note: Commandment X. borrowed from Geoff Halls Ten Commandments of Fly Fishing