The power of persistence.

Harry Bernstein wrote 40 books but destroyed the manuscripts after they were all rejected by publishers. Bernstein was 93 when his wife of 67 years died and started writing to help deal with his grief. He spent 3 years writing his memoir "The Invisible Wall."

He sent the manuscript to many New York publishers, all of whom turned it down. Then he sent it to an editor at Random House in the UK, where it sat in a pile of unsolicited manuscripts for a year before it was read by a stunned publishing director who immediately recognized it as inspired writing.

It was published in 2007 when Mr. Bernstein was 98. He would write three more acclaimed books, all of which were published, up until his death at 101. Bernstein called his 90s, "the most productive years of my life."

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