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Bill O'Reilly says Hillary Clinton's decision not to do a Fox News debate before the California Primary is a "major mistake for her."

O'Reilly said in his Talking Points that Clinton's Democratic opponent, Bernie Sanders, wants to "blow up capitalism" and "admires socialism."

"A debate with Sanders on Fox News would give Secretary Clinton a major opportunity to smash that theory -- to stick up for capitalism and perhaps persuade some voters she is not an ardent leftist," he said.

O'Reilly said a cradle-to-grave socialist system may work for a country like Sweden, but would be a "disaster" in America.

He said that he already pays about half his income in taxes, and doesn't want to pay any more, as Sanders would like.

"Capitalism certainly worked for me, and I don't want Sanders or anybody else taking more than half of my earnings to use for dubious social experiments and handouts to those who are not in need, who are layabouts."

Watch the memo above.

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