My opinions may have changed, but not the fact that I'm right.
© Ashleigh Brilliant
The fellow who thinks he knows it all is especially annoying to those of us who do.
Harold Coffin
Too bad all the people who know how to run this country are busy running taxicabs or cutting hair.
George Burns (1896-1996)
The only fool bigger than the person who knows it all is the person who argues with him.
Stanislaw Jerszy Lec (1909- )
Doubt is not a pleasant condition, but certainty is absurd.
Voltaire [François Marie Arouet] (1694-1778)
To be absolutely certain about something, one must know everything or nothing about it.
Olin Miller