Maquarre, Andre : Daily Exercises For The Flute
Evenness and beauty of tone will improve with the strengthening of the action of the lips while playing these passages. After a while you will be able to forget the difficulties of the flute and to think only how the music should be phrased; then you will have entered the path leading to finished artistry. Let this book be your guide during one hour every day - this means 365 days in the year - and for as many years as may be required to make its precepts a second nature.
Andre Maquarre (1893-1918)