The frontal lobe of the brain is concerned with reasoning, planning, parts of speech and movement, emotions, and problem-solving.

BBC: Differences found in autistic brains

Using images as parts of speech yields a new sort of language.

WSJ: David Gelernter: The Pros and Cons of Cyber-English

Different sites have picked up different parts of the speech to emphasise.

FORBES: Links 13 Feb: Apple's Tim Cook Speech At Goldman Sachs And The iWatch

For the Welsh Liberal Democrats Peter Black said that he regretted the tone of parts of Janet Finch Saunders' speech, which he said was based on "half-truths".

BBC: Conservatives' debate on value for money

Stroke experts at the hospital say different parts of the brain are used for speech and singing.

BBC: stroke patients at Princess Alexandra Hospital

Mr. Mulgrew praised several parts of Mr. Thompson's speech, including a call for expanded prekindergarten and schools that provide a broad range of services beyond traditional classes.

WSJ: Thompson Proposes Plan for Teacher Merit Wages

But the reality is that many parts of the brain work together to produce speech and no single gene, region of the brain or theory can explain successful language-learning.

ECONOMIST: What makes some people learn language after language?

But the Conservatives said there was nothing new in Mr Miliband's speech, saying dialogue between Kabul and parts of the Taliban had taken place for years.

BBC: Talk to Taliban, Miliband urges

In a speech in Oxfordshire, Mr Cameron described the disorder that spread from London to parts of the East and West Midlands, Merseyside, Bristol, Manchester and Gloucester as "a wake-up call for our country".

BBC: England riots: Broken society is top priority - Cameron