A dictionary of Proverbs (Oxford Paperback Reference)

impossible see the DIFFICULT is done at once.
impression see FIRST impressions are the most lasting.
IN for a penny, in for a pound

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  1695 E. RAVENSCROFT Canterbury Guests v. i. It concerns you to.. prove what you speak. .. In for a Penny, in for a Pound. 1815 SCOTT Guy Mannering III. vii. Sampson .. thought to himself, in for a penny in for a pound, and he fairly drank the witch’s health in a cupfull of brandy. 1841 DICKENS Old Curiosity Shop II. lxvi. Now, gentlemen, I am not a man who does things by halves. Being in for a penny, I am ready as the saying is to be in for a pound. 1979 P. NIESEWAND Member of Club viii. ‘Do you want to go and have a look, sir?’.. ‘Why not?.. In for a penny, in for a pound.’ 2001 Oldie Nov. 66 Have you ever suggested that you take the children away for a few days or even a week—in for a penny, in for a pound—after Christmas or near their birthdays? "action and consequence; perseverance; risk
  

inclined see as the TWIG is bent, so is the tree inclined.
inconvenience see POVERTY is no disgrace, but it is a great inconvenience.
index see the EYES are the window of the soul.
Indian see the only GOOD Indian is a dead Indian.
infinite see GENIUS is an infinite capacity for taking pains.
inside see there is NOTHING so good for the inside of a man as the outside of a horse.
intention see the ROAD to hell is paved with good intentions.
invention see NECESSITY is the mother of invention.
Ireland see ENGLAND’S difficulty is Ireland’s opportunity.
iron see STRIKE while the iron is hot.
Every JACK has his Jill

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  1611 R. COTGRAVE Diet. French & English s.v. Demander, Like will to like; a Iacke lookes for a Gill. 1619 in C. W. Bardsley Curiosities of Puritan Nomenclature (1880) i. The proverb is, each Jacke shall have his Gill. 1670 J. RAY English Proverbs 108 Every Jack must have his Gill... It ought to be written Jyll. 1855 G. J. WHYTE- MELVILLE General Bounce ii. ‘Every Jack has his Gill,’ if he and she can only find each other out at the propitious moment. 1940 H. W. THOMPSON Body, Boots & Britches xix. Every Jack has his Jill; If one won’t, another will. 1986 M. SLUNG More Momilies 47 For every Jack, there is a Jill. «men and women