We’ll send you a myFT Daily Digest email rounding up the latest Letter news every morning. Sir, Louis Brennan (Letters, October 10) is right to warn about an anthropomorphic and terrestrial bias in ...

In 1948, World War II veteran Thaddeus Wilcox left in the middle of the night from his idyllic San Francisco home with his wife Fanny and her sister Mabel to a remote property in the Mojave Desert ...

Mathematicians spend most of their time thinking about what’s knowable. But the unknowable can be just as compelling. Perhaps the most famous example comes from a theorem by the logician Kurt Gödel.

Over the years, great thinkers have pointed to an unknowable aspect of life that profoundly affects whether we reach our goals. Carl Jung described the “psychoid” as an unknowable connection between ...