know everything

Noun

Meaning

know everything (plural know everythings)

Alternative form of know-everything

Synonym of know-it-all

A highly knowledgeable person; expert.

Source: en.wiktionary.org

know-everything

The old believe everything; the middle-aged suspect everything; the young know everything. Oscar Wilde

I always like to know everything about my new friends, and nothing about my old ones. Oscar Wilde

I am not young enough to know everything. Oscar Wilde

Ask the young. They know everything. Joseph Joubert

To know everything is to know nothing. Italian Proverb

A wise man never knows all, only fools know everything. African Proverb