If health care professionals make a commitment to learning, a lifetime commitment, I think we'll go a long way.

FORBES: Carolyn Clancy, M.D.

More than half of Cox's clients are knowledgeable, confident gardeners themselves, who understand that high-end garden design entails a lifetime commitment.

WSJ: The Most Important Garden Designer You've Never Heard Of

"I have come to believe that if two people are prepared to make a lifetime commitment to love and care for each other in good times and in bad, the government shouldn't deny them the opportunity to get married, " he wrote in an op-ed in The Columbus Dispatch.

NPR: Changed Minds & Demographics In Gay Marriage Shift

Two years ago, Facebook cofounder Mark Zuckerberg signed The Giving Pledge, a public commitment to give away 50% of his wealth or more during his lifetime or upon his death.

FORBES: Mark Zuckerberg Finds Giving Spirit, Donates $500 Million To Silicon Valley Community Foundation

At the time of his sentence Mandela made a dramatic statement that illustrated his overarching commitment to freedom: "During my lifetime I have dedicated myself to the struggle of the African people, " he said.

CNN: Profile: Nelson Mandela's long walk

But two months previously, a senior civil servant told education experts "the scale of the commitment does not allow it to be delivered in the lifetime of a parliament", the Labour leader went on.

BBC: New SNP minister Russell suffers education defeat