A dictionary of Proverbs (Oxford Paperback Reference)

suffer see when ELEPHANTS fight, it is the grass that suffers.
SUFFICIENT unto the day is the evil thereof
With allusion to MATTHEW vi. 34 (AV) Sufficient unto the day is the evil thereof.

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  1766 in L. H. Butterfield et al. Adams Family Correspondence (1963) I. 56 Sufficient to the Day is the Evil thereof. 1836 J. CARLYLE Letter 1 Apr. in Letters & Memorials (1893) I. 57 In the meanwhile there were no sense in worrying over schemes for a future, which we may not live to see. ‘Sufficient for the day is the evil thereof.’ 1979 M. BABSON So soon done For vii. ‘I’ll deal with these [bills] later.’.. ‘Sufficient unto the day,’ Kay agreed. "good and evil
  

sufficient see also a WORD to the wise is enough.
summer see the RICH man has his ice in the summer and the poor man gets his in the winter; one SWALLOW does not make a summer.
Never let the SUN go down on your anger
With allusion to EPHESIANS iv. 26 (AV) Let not the sun go down upon your wrath.

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  1642 T. FULLER Holy State III. viii. S. Paul saith, Let not the Sunne go down on your wrath; to carry news of the Antipodes in another world of thy revengefull nature. 1709 O. DYKES English Proverbs 189 We ought not to let the Sun go down upon our Wrath, or our Impenitence; neither ought we to let it conclude our Sluggishness. 1972 CASSON & GRENFELL Nanny Says 37 Never let the sun go down on your anger. 1981 M. MCMULLEN Other Shoe ii. Never let the sun go down on your anger, Clare’s grandmother Herne used to say. "anger; forgiveness; malice
  

The SUN loses nothing by shining into a puddle
Cf. DIOGENES LAERTIUS VI. Ixiii. i'the^U- ^^ csu~c^:. ct.h ^univ-^. the sun i io dg b io aid (aributedto Diogenes); TERTULLIAN De Spectaculis xx. sol et in cloacam radios suos defert nec inquinatur, the sun spreads his rayseven into the swr, and is not staind.

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