Eugene W. Sard is not a name I recognized, so I Googled him. I don't know if I located the constructor or a family member with the same name...but the man I found has patents on file and was recognized by IEEE for contributions to the field of low-noise microwave, millimeter wave and infrared receivers. Impressive.
There were three theme answers...each spanning the grid with 15 letters. All were good answers, and I thought it was a clever theme.
17A: Is pessimistic (expects the worst).
38A: Is optimistic (hopes for the best).
60A: Is apathetic (couldn't care less).
Favorite clues and/or answers:
6A: "Bearded" bloom (iris). Ours are just starting to pop through the ground. I'm more than ready for spring.
14A: Exotic jelly flavor (guava). We had that in Hawaii, but I don't think we've had it since. Must see if I can find some for a tropical treat.
16A: Boston suburb (Lynn). Never heard of it, but it's also the name of my childhood best friend. We're still in touch...almost 40 years after graduation.
21A: "I agree completely" (so true).
29A: Diving bird (auk).
32A: __ shui (feng). I wondered if my house was arranged properly, so I picked up a book on feng shui. It's a wonder we didn't all die twenty years ago. According to that book, everything in our house is wrong.
42A: Taj Mahal site (Agra). Crosswordese that you should remember. I finally have.
43A: Hobby knife brand (X-acto). There's nothing quite like an X-acto knife.
55A: Binging (on a spree). I like that this didn't end in -ing...and that I didn't second-guess myself when I saw that it didn't.
5D: Masked scavengers (raccoons). We're not bothered by them here, but we had to enclose our compost pile and put a concrete block on top to keep the skunks from playing in it.
8D: "__ bin ein Berliner" (ich). I remember this from my childhood. John F. Kennedy said this, intending to say, "I am a Berliner." He should have left out ein...because what he said translated to "I am a jelly doughnut." If any of you know German and can tell me once and for all if that is true, I'd be grateful.
9D: Tom Jones's "__ a Lady" (She's). There are probably a hundred ways to clue that answer, but because they chose this one...here's Tom Jones singing it. Aah, the seventies...don't you love the lace on his cuffs.
11D: Gift of the Magi (myrrh). I love the way it looks...as though it must be spelled wrong.
19D: Captain Queeg's creator (Wouk)...from "The Caine Mutiny." Humphrey Bogart was nominated for an Oscar for his portrayal of Queeg in the 1954 film.
25D: "Love and Marriage" lyricist Sammy (Cahn).
46D: Screwy (wacko).
I liked the similar cluing for consecutive answers...66A: Attack, as with eggs (pelt) and 67A: Attack with rocks (stone). Eggs would be messy, but I'd take them over rocks.
That's it for tonight. Here's the grid...
...and I'll see you tomorrow.