Speculation Dangerous When it's Affordable or Not

"There are two times in a man's life when he should not speculate: when he can't afford it, and when he can." -- Mark Twain

Mark Twain: Danger in Stock Market Speculation All Year

"October: This is one of the peculiarly dangerous months to speculate in stocks in. The others are July, January, September, April, November, May, March, June, December, August and February." -- Mark Twain