But is self-actualization through productive work--the ultimate goal of this liberation for Rand--all there is to a happy life?

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"This droll-faced northern girl, who in the course of a long and happy life, took her place amongst the best we have, " said Bennett.

BBC: NEWS | Entertainment | Stars celebrate Dame Thora's life

But, I was really happy to finally be able to do at least one thing to help my sister during this last stage of your life.

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And at 74, Cheeta has exceeded the average life expectancy for a chimpanzee in captivity by nearly a quarter-century, which makes this a very happy birthday indeed.

NPR: Cheeta, Screen Star for the Ages