It is because of this quotation that the October curse is sometimes known as the Mark Twain Effect. The Colombo Stock Exchange declined in October this year and nor did it have a good one last year. On the other hand April, May, June, July, August, September and November weren't very good months either.
OCTOBER: This is one of the peculiarly dangerous months to speculate in stocks in. The other are July, January, September, April, November, May, March, June, December, August, and February. - Pudd'nhead Wilson's Calendar
There are two times in a man's life when he should not speculate: when he can't afford it and when he can. - Following the Equator, Pudd'nhead Wilson's New CalendarMark Twain actually filed for Bankruptcy, so let's consider it as proof that one should not speculate even though one can afford it; Mark Twain certainly could. Eventually he made enough money to repay all his borrowings.