"A conception not reducible to the small change of daily experience is like a currency not exchangeable for articles of consumption; it is not a symbol, but a fraud"

This quote by George Santayana is a warning against abstract ideas that can not be used to daily life. He is saying that if an idea can not be broken down into something that can be used in everyday life, it is basically useless. He compares this to a currency that is not exchangeable for products and services, which is essentially a scams. He is suggesting that if an idea can not be utilized to enhance the lives of people, it is unworthy anything. He is stressing the significance of usefulness and usefulness in ideas. He is recommending that abstract concepts should be utilized to enhance the lives of people, not simply to be discussed in theory. This quote is a suggestion that ideas should be useful and beneficial in order to be important.