Conversation would be vastly ...

Conversation would be vastly improved by the constant use of four simple words: I do not know.
Conversation would be vastly improved by the constant use of four simple words: I do not know.
 Andre Maurois

More phrases

All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
I know but one freedom and that is the freedom of the mind.
 Antoine de Saint-Exupéry
Freedom is not worth having if it does not connote freedom to err.
The amount of happiness that you have depends on the amount of freedom you have in your heart.
 Thích Nhất Hạnh
Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.

Quotes from the same author

Men fear silence as they fear solitude, because both give them a glimpse of the terror of life's nothingness.
 Andre Maurois
Growing old is no more than a bad habit which a busy person has no time to form.
 Andre Maurois
Almost all great writers have as their motif, more or less disguised, the passage from childhood to maturity, the clash between the thrill of expectation and the disillusioning knowledge of truth. 'Lost Illusion' is the undisclosed title of every novel.
 Andre Maurois
In a discussion, the difficulty lies, not in being able to defend your opinion, but to know it.
 Andre Maurois
Without a family, man, alone in the world, trembles with the cold.
 Andre Maurois