of all things
Meaning
(idiomatic) Especially; more than other things.
(idiomatic, often used as a sentence adverb) Surprisingly.
He reached into his pocket and pulled out, of all things, an ice cream cone.
Well, of all things! Who would have expected him to propose to her on stage?
Examples
Experience is the teacher of all things.
Old age is the most unexpected of all things that happen to a man.
Time is the devourer of all things.
Man alone is the measure of all things.
Life is the source of all things.
Money is the measure of all things.