You can’t legislate intelligence and common sense into people.

Will Rogers (1879-1935) American humorist

Column (1934-03-16) “Daily Telegram: Rogers Doubts We Want Insull Back Very Much”
    (Source)

The Will Rogers Museum also cites it as a quotation, but in a pair of sentences; the second sentence was not in this column:

You can’t legislate intelligence and common sense into people. You can’t broaden a man’s vision if he wasn’t born with one.