“J. E. Littlewood, a mathematician at Cambridge University, wrote about the law of truly large numbers in his 1986 book, "Littlewood's Miscellany." He said the average person is alert for about eight hours every day, and something happens to the average person about once a second. At this rate, you will experience 1 million events every thirty-five days. This means when you say the chances of something happening are one in a million, it also means about once a month. The monthly miracle is called Littlewood's Law.”

“You can also look at your body and think about how the blood flows and the fact that your body is in constant renewal. It is a miracle of creation happening within you every second of the day. This is something to be thankful for.”

“You'll write to me, won't you?" Albus asked his parents immediately, capitalizing on the momentary absence of his brother."Every day, if you want us to," said Ginny."Not every day," said Albus quickly. "James says most people only get letters from home about once a month.""We wrote to James three times a week last year," said Ginny."And you don't want to believe everything he tells you about Hogwarts," Harry put in. "He likes a laugh, your brother.”

“The Greeks were the first mathematicians who are still ‘real’ to us to-day. Oriental mathematics may be an interesting curiosity, but Greek mathematics is the real thing. The Greeks first spoke a language which modern mathematicians can understand: as Littlewood said to me once, they are not clever schoolboys or ‘scholarship candidates’, but ‘Fellows of another college’. So Greek mathematics is ‘permanent’, more permanent even than Greek literature. Archimedes will be remembered when Aeschylus is forgotten, because languages die and mathematical ideas do not. ‘Immortality’ may be a silly word, but probably a mathematician has the best chance of whatever it may mean.”

“A life is about twenty-five thousand days, and a finding occurs about once every twenty-five thousand days.In other news, once in a lifetime.”

“Proust's life changed due to a very large inheritance he received (in today's terms, a principal of about $6 million, with a monthly income of about $15,000).”