Foregone

"We need a different understanding of revenues and public expenditure. The 15-year freeze on fuel duty and lack of tax on aviation fuel are effectively a huge subsidy to those forms of travel, but they are not described as subsidy because they are foregone revenue. Yet if you invest to hold rail fares, it's seen as subsidy."

For with the dream foregone, foregone, The deed forborne for ever, The worm, regret, will canker on, And time will turn him never.