Who said "A man who tells secrets is not trustworthy."?

This quote is attributed to Samuel Hamilton.

A man who tells secrets is not trustworthy. - Samuel Hamilton

"A man who tells secrets is not trustworthy."

Samuel Hamilton

Character in East of Eden

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"Some people are born to lift the world up a little when they come into it."

"I love the world. I love people."

"Do you know what I believe? I believe that every man is responsible for his own soul."

"A man is not beaten until he wishes to be."