And the words continue to echo down to the present day, spoken to us today by children who were not even alive then.

CNN: Transcript: Clinton On Anniversary Of March On Washington

And what will it take to keep the American Dream alive for our children and our grandchildren?

WHITEHOUSE: Education, Innovation & The Economy

Permanently disabled and jobless, he tries to find enough to keep his wife and seven children alive, the youngest aged three.

ECONOMIST: A bit of collateral damage

During American Education Week, we recommit to keeping the promise of education alive for this generation and the next, because when we give our children the best chance to succeed, there is no telling what they might accomplish.

WHITEHOUSE: The White House

Some 44% appreciate their life because they lived to see the birth of their grandchildren, and a third say that seeing their children graduate made them glad to be alive.

BBC: Cancer 'changes outlook on life'

The children of the moon landings have grown up: they now hold the positions of power to make their dreams come alive.

CNN: Biography: Robert Richards

Because of your efforts to improve basic health conditions, there are children around the world who are alive today who would have died without your help.

WHITEHOUSE: Remarks by The First Lady at USAID Agency visit

"What really brings children with certain disabilities alive is to be able to hold the animals and stroke them, " Mr Laister said.

BBC: Daughter inspires disabled friendly farm in Oxfordshire