The total effective demand for commodities in the market is limited to the number of units of money of account that dealers are prepared to offer, an… - Ralph George Hawtrey

Once the gold standard was suspended, there could be no doubt of the purpose of that step. In face of the exchange risk the high rate could not possibly attract foreign money. It could only be intended as a safeguard against inflation. Fantastic fears of inflation were expressed. That was to cry, Fire, Fire, in Noah's Flood. It is after depression and unemployment have subsided that inflation becomes dangerous.

Scientific treatment of the subject of currency is impossible without some form of the quantity theory … but the quantity theory by itself is inadequate, and it leads up to the method of treatment based on what I have called the consumers’ income and the consumers’ outlay – that is to say, simply the aggregates of individual incomes and individual expenditures.

Economic theory, in every branch, deals with practical affairs. Its subject is human welfare, and it is never entirely dissociated from the practical question of how human welfare is to be promoted. But it is a special characteristic of the art of central banking that it deals specifically with the task of an authority directly entrusted with the promotion of human welfare. Human welfare, human motives, human behaviour supply material so baffling and elusive that many people are sceptical of the possibility of building a scientific edifice on so shifting a foundation. But however complex the material, and however imperfect the data, there is always an advantage to be gained from systematic thought.