It is difficult to predict, especially the future.
- Niehls Bohr, Danish physicist, 1885-1962 – attributed by Mark Kac, Statistics, 1975. Other sources say it is a Danish pun (anybody here speak Danish?) famous in the Danish parliament in the 1930s.
And as if in tribute to Bohr, Ed Brayton at Dispatches from the Culture Wars has a collection of creationist predictions that evolution theory will soon be dead — a series of predictions starting in 1904. Santayana’s Ghost urges you to read them, to avoid repeating history.