A dictionary of Proverbs (Oxford Paperback Reference)

One HALF of the world does not know how the other half lives
Cf. 1532 RABELAIS PantagruelII. xxxii. la тоуиё du monde ne sgait comment I’autre vit, one half of the world knows not how the other lives.

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  1607 J. HALL Holy Observations xvii. One half of the world knowes not how the other liues: and therefore the better sort pitty not the distressed .. because they knowe it not. 1640 G. HERBERT Outlandish Proverbs no. 907 Halfe the world knowes not how the other halfe lives. 1755 B. FRANKLIN Poor Richard’s Almanack (Preface) It is a common saying, that One Half of the World does not know how the other Half lives. 1830 MARRYAT King’s Own I. x. It is an old proverb that ‘one half the world do not know how the other half live’. Add to it, nor where they live. 1945 C. S. LEWIS That Hideous Strength i. ‘I didn’t even know this was Bracton property.’ ‘There you are! .. One half of the world doesn’t know how the other half lives.’ 1979 A. MORICE Murder in Outline vi. It just proved how true that saying is about one half knowing so little of the other, even when both halves are living under the same roof. "ignorance; society
  

HALF the truth is often a whole lie

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  1758 B. FRANKLIN Poor Richard’s Almanack (July) Half the Truth is often a great Lie. 1859 TENNYSON Poems (1969) 1107 That a lie which is half a truth is ever the blackest of lies, That a lie which is all a lie may be met and fought with outright, But a lie which is part a truth is a harder matter to fight. 1875 A. B. CHEALES Proverbial Folklore 166 Half the truth is often a whole lie .. is a proverb which Tennyson has most admirably versified. 1979 H. HOWARD Sealed Envelope xiii. ‘You’ve been lying.’ .. ‘Half the truth can be worse than a straight lie.’ "lying
  

half see also BELIEVE nothing of what you hear, and only half of what you see; two BOYS are half a boy, and three boys are no boy at all; a FAULT confessed is half redressed; he that has an ILL name is half hanged; WELL begun is half done.