Who said "A man can't always be sure about his past."?

This quote is attributed to Jay Gatsby.

A man can't always be sure about his past. - Jay Gatsby

"A man can't always be sure about his past."

Jay Gatsby Truth

Character in The Great Gatsby

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"It is what it is, and I owe them that much."

"The past cannot be repeated. The only thing we can do is to move forward."

"Why of course you can!"

"The only thing that sustains me is the thought of love."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."