Quadruplet obtained by Mel Brooks, Whoopi Goldberg, and Rita Moreno
5D
Powerful Middle Eastern spirit
6D
Ran
7D
Alt. to JFK
10D
He may be 11-Down of an intruder
11D
Running after
12D
Sometimes they can be skipped, sometimes they run the whole way through
15D
[17-Across] __ a bug in a rug
18D
German mathematician who contributed to algebra, geometry, geography, physics, and more
22D
16th century Mughal emperor
23D
"__ like water making its way through cracks. Do not be assertive, but adjust to the object, and you shall find a way around or through it. If nothing within you stays rigid, outward things will disclose themselves." - Bruce Lee
24D
Commercial spelling that denotes a speed below that of a run
26D
Bygone unit of mass larger than a gram but smaller than an ounce