“Grief and mad wrath devoured his soul, and hope, heaviest of mortal cares when long deferred.”
Source: Thebaid, Book II, Line 319
Original
Exedere animum dolor iraque demens et, qua non gravior mortalibus addita curis, spes, ubi longa venit.
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Statius 93
Roman poet of the 1st century AD (Silver Age of Latin liter… 45–96Related quotes

“Be wise to-day; 'tis madness to defer.”
Actually Night I, line 390 of Edward Young's Night Thoughts.
Misattributed

I. H. Bromley, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

“Some tiny creature, mad with wrath, is coming nearer on the path.”
Source: The Evil Garden

“Time devours our feeble mortality, leaving us with but the sour residue of memory.”
Marvin nodded. “Yet this ineffable and ungraspable quantity,” he replied, “this time which no man may possess, is in truth our only possession.”
Source: Mindswap (1966), Chapter 24 (p. 110)

“Yet all does the sire himself ruthlessly condemn to the murky flames, and bid his own signs of rank be borne withal, if by their loss he may sate his devouring grief.”
Cuncta ignibus atris
damnat atrox suaque ipse parens gestamina ferri,
si damnis rabidum queat exaturare dolorem.
Source: Thebaid, Book VI, Line 81 (tr. J. H. Mozley)
Christian Regeneration.
The Grounds and Reasons of Christian Regeneration (1739)
“Hope deferred makes the heart sick, but desire fulfilled is a tree of life.”
Source: Proverbs 13:12