Things do not happen. Things are made to happen. John F. Kennedy
The whole history of science has been the gradual realization that events do not happen in an arbitrary manner, but that they reflect a certain underlying order, which may or may not be divinely inspired. Stephen Hawking
Very few things happen at the right time, and the rest do not happen at all. The conscientious historian will correct these defects. Herodotus
That happens in a moment which may not happen in a hundred years. Italian Proverb
What might not happen in a year might happen in an instant. Puerto Rican Proverb
That often happens in a day which does not happen in a hundred years. French Proverb