According to Taylor, the principles of Efficiency are: - Herbert Newton Casson

Scientific management consists in correct interpretation of phenomena, in exact knowledge of laws, principle and the influence of conditions upon results: and in the skilled use of methods adapted to the almost infinitely varying circumstances of individual cases
- Engineering magazine -

There are always obstacles and competitors. There is never an open road, except the wide road that leads to failure. Every great success has always been achieved by fight. Every winner has scars. The men who succeed are the efficient few. They are the few who have the ambition and will power to develop themselves.

As yet the efficiency of selling goods has not been worked out. Most salesmen believe it cannot be done. They claim that there are too many variables in the problem. Perhaps there are, but nobody knows until the experiment has been thoroughly tried. In every case the victories of Efficiency have been won in spite of the most stubborn opposition from the men who were being helped. And one fact is sure - that the first Advertisers and Sales Managers who try out Efficiency and succeed will find themselves in a gold mine. They will have found a better way to enter a market that handles, in an average year, thirty thousand million dollars worth of goods.