Sean M. Carroll

Claims that some form of consciousness persists after our bodies die and decay into their constituent atoms face one huge, insuperable obstacle: the laws of physics underlying everyday life are completely understood, and there's no way within those laws to allow for the information stored in our brains to persist after we die.

American Scientist

Terry Eagleton

There is an insuperable problem about introducing immigrants to British values. There are no British values. Nor are there any Serbian or Peruvian values. No nation has a monopoly on fairness and decency, justice and humanity.

English Critic

J. R. R. Tolkien

The original 'Hobbit' was never intended to have a sequel - Bilbo 'remained very happy to the end of his days and those were extraordinarily long': a sentence I find an almost insuperable obstacle to a satisfactory link.

English Novelist

James Madison

The diversity in the faculties of men, from which the rights of property originate, is not less an insuperable obstacle to an uniformity of interests. The protection of these faculties is the first object of government.

American President

Manny Farber

The cold, mean 'Sunset Boulevard' - a beautiful title, though I suspect it was shot on another boulevard - is further proof of the resurgence of art in the Hollywood of super-craftsmen with insuperable taste.

American Artist

Henry Morton Stanley

An insuperable obstacle to rapid transit in Africa is the want of carriers, and as speed was the main object of the Expedition under my command, my duty was to lessen this difficulty as much as possible.

Welsh Explorer

Richard Rolle

The first is called insuperable, the second inseparable, the third singular.

English Writer

Lionel Murphy

There are no insuperable constitutional difficulties.

Australian Politician

Ellen Terry

Conceit is an insuperable obstacle to all progress.

English Actress

Use 'insuperable' to stress extreme difficulty, implying it's not just hard but impossible to tackle the problem.

Emphasize Difficulty

'Insuperable' often describes figurative barriers or problems, not physical ones.

Not Physical

The word 'insuperable' is formal and serious, suitable for academic or professional contexts.

Serious Tone

 In this room, all this expertise, if we joined it all together, we could change the world. And of course the problems sometimes seem insuperable.