DAILY THEME ACROSS 1 When Polonius says "Brevity is the soul of wit"
6 Tusked beast
10 Kind of threat
14 Swoon
15 Alan who played Captain Pierce
16 Essential point
17 Agonizes (over)
18 With 61- and 37-Across, famous line by 53-Across in [see circled letters]
20 The "E" in HOMES
21 Nubian h**ne of opera
22 Family member who was probably adopted
23 Hairstyle for 53-Across, colloquialy
28 Place where trials are conducted
29 Hitting blackjack after blackjack, say
33 Michelangelo masterpiece
36 A few
37 See 18-Across
43 Ambience
44 "Same here!"
45 Is victorious in
48 Swindles
53 Iconic role for 2-/51-Down
56 "What have we here?!"
59 Knock 'em dead
60 Online crafts seller
61 See 18-Across
64 Like old, neglected sweaters, maybe
65 Renaissance Faire instrument
66 Sign of things to come
67 Tree-lined walkway, in France
68 Make slo-o-o-ow progress
69 Concealed mike
70 Entitled sorts DOWN 1 Influence
2 With 51-Down, late, beloved actress
3 Certain marketing gimmicks
4 Hell-bent (on)
5 "___ a trap!"
6 "Harumph!"
7 Brand of artificial fat
8 Deal with a broken teleprompter, say
9 Rae Sremmurd, e.g.
10 Makeup of the planet Hoth
11 Nosedive
12 Squeak stopper
13 Turnoff for drivers
19 "Doctor Faustus" novelist Thomas
24 Mont Blanc, e.g., to locals
25 Cripple
26 Heeds
27 Merit badge displayer
30 Figure on an Aussie Xing sign, perhaps
31 World Series official
32 Formerly named
34 "___ late!"
35 Tennis champ Aga**i
37 Deviate during flight, as a rocket
38 Non's opposite
39 Coffee container
40 Speak with a gravelly voice
41 Amy Adam's "Man of Steel" role
42 Puppy sounds
46 British derrière
47 So far, informally
49 Chant after a fútbol goal
50 In fine ______ (healthy)
51 See 2-Down
52 Agree to a proposal
54 Country singer Judd
55 Modern lead-in to space or security
56 Real head-turners?
57 Drag
58 Not deceived by
62 Beer barrel
63 Having four sharps
64 Reference in "Treasure Island"