LONDON (AP) -- "Enlightenment" was the theme, physicist Stephen Hawking the guide and Olympic Stadium the venue Wednesday night as London welcomed 4,200 athletes from more than 160 nations to the 2012 Paralympic Games.
Who better to greet Paralympians than a scientist who has shown the world that physical disabilities do not limit human potential?
"Even if we do find a complete theory of everything, it is just a set of rules and equations," said Hawking, who was given two years to live in 1963 after he was diagnosed with motor neurone disease. "What is it that breathes fire into the equations and makes a universe for them to describe?"
The extravaganza, directed by Bradley Hemmings and Jenny Sealey, was billed as a voyage across "a sea of ideas" - including Isaac Newton's discovery of gravity, which all Earth-bound athletes strive against. The show included 73 deaf and disabled professional performers and 68 disabled people among its 3,250 volunteers.
The gala opened with a look at the Big Bang - considered the beginning of the universe - as a glowing sphere turned the stadium into a giant nebula.
In a nod to the famously erratic British weather, umbrellas were a central theme. Seeing performers with no legs beneath the knee doing aerial flips carrying umbrellas could inspire the most ardent couch potato.
A huge roar filled the stadium as the South African team entered for flagbearer Oscar Pistorius, the sprinter who is making history by running in both the Olympics and the Paralympics this year. Glittery ticker tape and a standing ovation then greeted the host British team as they entered to the David Bowie song "Heroes."
Athletes paraded by in dozens of ways. Some came in motorized carts, others wheeled themselves in, still others were pushed by coaches or volunteers. They walked in with canes or crutches, eye patches and sunglasses, prosthetic limbs and walking sticks, determined to make it around the imposing stadium, welcomed by a global music mash-up by local DJs.
Blind soprano Denise Leigh then sang the Paralympic tribute song "Spirit in Motion."
And of course, this being Britain, the words of Shakespeare once again were to make an appearance, with both Miranda of "The Tempest" and British actor Ian McKellen announcing that "the greatest adventure is what lies ahead."
That, over the next 11 days, includes Paralympic athletes competing in 20 sports, including archery, cycling, rowing, equestrian, sailing, sitting volleyball, wheelchair rugby, wheelchair tennis and wheelchair basketball.
In the ceremony, Hawking directed the fictional Miranda to "be curious" - and the stadium was transformed into a giant blinking eye. Along her travels, the curious Miranda was to navigate a maze to find an apple - and everyone in the stadium was given the fruit as they entered and encouraged to take a bite out of the fruit when she did.
Other performers included soprano Elin Manahan Thomas, Beverley Knight, the British dance group Flawless and six London-based choirs.
Outside the stadium before the ceremony, hundreds of performers cheered, sang and danced as the Paralympians lined up to enter. Jason Kajdi, an 18-year-old from south London, did huge splits with bouncy legs that resembled the "Cheetah" prosthetic limbs used by Pistorius.
"Never used these before this," Kajdi admitted. "They are brilliant fun but hard work."
"It's a grand party - brilliant atmosphere!" said Jessica Boatright, 23, of London, dressed in a punk court jester outfit.
Authorities, meanwhile, promised to provide "a grand and global stage" for a games that everyone will remember.
Queen Elizabeth II said the nation looked forward to "celebrating the uplifting spirit which distinguishes the Paralympic Games from other events." She was accompanied by her grandson, Prince William, his wife Kate, the Duchess of Cambridge, and Prime Minister David Cameron.
Sebastian Coe, chief of the London organizing committee, issued a big welcome home "to a movement that shows what sport is all about."
"Sport is about what you can do, what you can achieve, the limits you can reach, the barriers you can break. Sport shows what is possible. Sport refuses to take no for an answer," Coe said in his speech.
The Paralympic movement tracks its beginnings to the vision of Dr. Ludwig Guttmann, who in 1948 organized an archery competition for 16 injured patients at Stoke Mandeville Hospital in Britain.
Wednesday's ceremony was to conclude with Miranda breaking a glass ceiling - just as Paralympians must smash through their own barriers - showering the stadium in pixels.
Society, too, was encouraged to abandon old-fashioned perceptions of what disabled people can and cannot do.
"The Paralympic Games have inspired us to make London a more inclusive and welcoming city, to shift perceptions of disability and break down barriers in society," London Mayor Boris Johnson said.