Wisdom of classic fly fishing

I read this on Fish "the outdoors" site (by Donald Berthiaume).
I sounds very cool for modern book.

Where To Find 10 Fly Fishing Tips In A Single Paragraph

"Exercising patience, he may walk slowly and quietly into the water at the tail of the stretch and as closely as possible to the bank the fish are under. Having attained the desired position, he should remain there long enough to allow all commotion made by his entry to cease, during which time no motion of the rod should be made, because the sight of any moving object will send the now alert trout scurrying, while the ripples will make him uneasy for a short time only. The horizontal cast should be used if possible. The fly should be floated down about a foot from the bank, and it should not be retrieved until it has traveled more than half the distance between the angler and the spot where it alighted....

When satisfied that no trout are within the section covered by the fly, the angler should lengthen his line and fish the fly a few feet above-always permitting the fly to travel over the water already fished. He should continue this until the maximum line that can be handled neatly without moving from the original position is being cast. When the line becomes unwieldy (in this method and position it is courting failure to attempt anything over thirty-five to forty feet, even if one is expert) an advance may be made a few yards up-stream as closely to the bank as the depth of the water and free casting space will permit. As it is quite possible-and likely, too-that a trout has been under the fly all the while, but was not interested in it, the angler's advance will drive him ahead, and indications of this should be sharply looked for. The discovery of the fish will save much valuable time, for in that case the immediate stretch may be abandoned, because any fish above the one seen will have certainly taken alarm at the actions of his ! fellow and will have lost all desire to feed for some time."