A dictionary of Proverbs (Oxford Paperback Reference)

worm see also the EARLY bird catches the worm.
worry see it is not WORK that kills, but worry.
worse see GO further and fare worse; NOTHING so bad but it might have been worse; the more you STIR it the worse it stinks.
worst see HOPE for the best and prepare for the worst; when THINGS are at the worst they begin to mend.
The WORTH of a thing is what it will bring
Cf. L. valet quantum vendi potest, it is worth as much as it can be sold for; 15th-cent. Fr. tant vault la chose comme elle peut estre vendue, a thing is worth just so much as it can be sold for.

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  1569 J. SANFORDE tr. H. C. Agrippa’s Vanity of Arts & Sciences xci. The thinge is so muche worthy as it maye be solde for. 1664 S. BUTLER Hudibras II. i. For what is Worth in any thing, But so much Money as ‘twill bring? 1813 SOUTHEY Life of Nelson I. ii. Vouchers, he found in that country were no check whatever; the principle was, that ‘a thing was always worth what it would bring’. 1847 J. O. HALLIWELL Dict. II. 864 The worth of a thing is what it will bring. 1908 Spectator 4 Apr. 535 ‘The real worth of anything Is just as much as it will bring’. You cannot get beyond that piece of ancient wisdom as to the determination of value. "buying and selling; value
  

worth see also a BIRD in the hand is worth two in the bush; a KING’S chaff is worth more than other men’s corn; an OUNCE of practice is worth a pound of precept; a PECK of March dust is worth a king’s ransom; one PICTURE is worth ten thousand words; it is a POOR dog that’s not worth whistling for; a SWARM in May is worth a load of hay; if a THING’S worth doing, it’s worth doing well; one VOLUNTEER is worth two pressed men.
worthy see the LABOURER is worthy of his hire.
wrath see a SOFT answer turneth away wrath.