“I don’t drink Starbucks.” That used to be my mantra. They had destroyed Spinelli’s and were squeezing Martha’s, and I did not appreciate it. It wasn’t that I did not love their orange-mocha frappuccinos (I did), but I felt like buying their coffee would be an unforgivable breach of my ethical codes.

“Extreme poverty can be ended, not in the time of our grandchildren, but our time,” wrote Jeffrey Sachs, director of Columbia’s Earth Institute and Special Adviser to Kofi Annan on the Millennium Development Goals, in his new book, The End of Poverty.