The UNEXPECTED always happens
Similar to
NOTHING is certain but the unforeseen
. Cf. PLAUTUS
Mostellaria
I
. iii. 197
insperata accidunt magi' saepe quam quae speres
, unexpected things happen more often than those you hope for.
1885
How to be Happy though Married
xxv.
A woman may have much theoretical knowledge, but this will not prevent unlooked-for obstacles from arising … It is the unexpected that constantly happens.
1909
Times Weekly
12 Nov. 732
No place in the world is more familiar than the House of Commons with ‘the unforeseen that always happens.’
1938
Scoop
I
. iii.
Have nothing which in a case of emergency you cannot carry in your own hands. But remember that the unexpected always happens.
1977
Peter's Quotations
296
Peter's Law—The unexpected always happens.
certainty and uncertainty
;
foresight and hindsight