Professor Goddard does not know the relation between action and reaction and the need to have something better than a vacuum against which to react. He seems to lack the basic knowledge ladled out daily in high schools. It can't be done. It's just a fact of life. You just have to accept inconsistent muscle development as an unalterable condition of weight training.
Airplanes are interesting toys but of no military value.
Extraordinary to Queen Victoria 1873. 640K ought to be enough for anybody.