A dictionary of Proverbs (Oxford Paperback Reference)

HARD words break no bones
A terser statement of the sentiment in STICKS and stones may break my bones, but words will never hurt me. Cf. c 1450 Towneley Play of Noah (EETS) 1. 380 Thise grete wordis shall not flay me.

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  1697 G. MERITON Yorkshire Ale (ed. 3) 84 Foul words break neay Banes. 1806 H. H. BRACKENRIDGE Gazette Publications 250 Hard words, and language break nae bane. 1814 G. MORRIS Letter 18 Oct. (1889) II. xlix. These .. are mere words—hard words, if you please, but they break no bones. 1882 BLACKMORE Christowell III. xvi. ‘Scoundrel, after all that I have done—.’ ‘Hard words break no bones, my friend.’ 1980 G. NELSON Charity’s Child i. Soft words! They butter no parsnips. .. Would you prefer hard ones? .. Hard words break no bones. ■ malice
  

hard see also OLD habits die hard.
hardens see the same FIRE that melts the butter hardens the egg.
harder see the BIGGER they are, the harder they fall.
hare see FIRST catch your hare; if you RUN after two hares you will catch neither; you cannot RUN with the hare and hunt with the hounds.
HASTE is from the Devil

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  1633 J. HOWELL Familiar Letters 5 Sept. (1903) II. 140 As it is a principle in chemistry that Omnis festinatio est a Diabolo, All haste comes from Hell, so in .. any business of State, all rashness and precipitation comes from an ill spirit. 1835 SOUTHEY Doctor III. lxxxiii. If any of my readers should .. think that I ought to have proceeded to the marriage without delay. . I must admonish them in the words of a Turkish saying, that ‘hurry comes from the Devil, and slow advancing from Allah.’ 1929 Times 12 Sept. 14 Listening patiently to the views..[f]or he understood the East; he knew that for an Intelligence officer ‘haste is from the devil.’ "haste; patience and impatience