In The Tricky Art of Co-Existing, Sandi Toksvig navigates life's little dilemmas with wit and not-so-common sense. You'll learn the strange history of common courtesy and the one true secret of social success: how to not drive everyone around you crazy.

The assumption that anything true is knowable is the grandfather of paradoxes.

Kelly was aware that there is one type of favorable bet available to everyone; the stock market.

Samuelson, however, hedged his personal bets - by putting some of his own money in Berkshire Hathaway.

At a bare minimum, understanding entails being able to detect an internal contradiction: a paradox.

Paradox is thus a much deeper and universal concept than the ancients would have dreamed. Rather than an oddity, it is a mainstay of the philosophy of science.

Carl Friedrich Gauss, often rated the greatest mathematician of all time, played the market. On a salary of 1,000 thalers a year, Euler left an estate of 170,587 thalers in cash and securities. Nothing is known of Gauss's investment methods.