But he struck a combative tone as he defended the core principles of his tax-cutting budget and overall economic strategy, which Duncan Smith attacked as "deeply unfair" after stepping down as work and pensions secretary.
The introduction of the Bedroom Tax has been just one of the incredibly cruel, unfair, and damaging steps this Government has taken that has hurt those that are most in need.
Ofcom ruled that Channel 4 had taken reasonable steps to avoid "unfair and unjust" treatment of the MPs, making sure their views were fairly aired.
It would be unfair to those who stepped up to buy to cancel any more trades.
He added: "EU nationals in Scotland and right across the UK can rest assured that the SNP will fight David Cameron's unfair, undemocratic plans every step of the way".
So while people question whether Pistorius's carbon-fiber legs give him an unfair advantage, representing the first step into a future of bionic athletes, that debate is not happening in football.
… Building a peer evaluation system that is truly as diverse as the publication enterprise we desire would be a big step toward eliminating unfair bias that harms the scientific enterprise".
While the Gulf carriers continue to grow and threaten domestic carriers around the world with unfair competition, foreign governments are stepping up to ensure their domestic carriers are not left behind.
He also argues that Bodyline, which was legal at the time, was a necessary step to overcome the unfair advantage which batsmen of the time enjoyed.
I would like to request that American Express refund the $43 in fees and take steps to stop this unfair-to-consumers practice in the future.
The Clean Power Plan is a critical step to ending that unfair treatment, and I hope to help build a truly cooperative, diverse, intergenerational alliance to make sure it succeeds.
