Family values -- Eternity in an hour -- Counting to four in Icelandic -- Proverbs and times tables -- Classroom intuitions -- Shakespeare's zero -- Shapes of speech -- On big numbers -- Snowman -- Invisible cities -- Are we alone? -- The calendar of Omar Khayyam -- Counting by elevens -- The admirable number of Pi -- Einstein's equations -- A novelist's calculations -- Book of books -- Poetry of the primes -- All things are created unequal -- A model mother -- Talking chess -- Selves and statistics -- The cataract of time -- Higher than heaven -- The art of math.