Related:

• Things without all remedy Should be without regard
  what 's done is done. -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc. 2...
• A deed of dreadful note. -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc. 2
• Be innocent of the knowledge, dearest chuck, Till thou applaud the deed.
  -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc. 2...
• In them Nature's copy 's not eterne. -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc.
  2...
• We have scotch'd the snake, not kill'd it. -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc.
  2...
• Infirm of purpose! -- William Shakespeare (1564-1616), Macbeth -- Act ii, Sc. 2
• How oft the sight of means to do ill deeds Make deeds ill done!
  -- William Shakespeare (1564-1616), King John -- Act iv, Sc. 2...
• Can such things be, And overcome us like a summer's cloud, Without our special wonder?
  -- William Shakespeare (1564-1616), Macbeth -- Act iii, Sc. 4...
• Though it make the unskilful laugh, cannot but make the judicious grieve.
  -- William Shakespeare (1564-1616), Hamlet -- Act iii, Sc. 2...