Misc: what unit of speed is equal to one nautical mile per hour?

Questions

"If the facts don't fit the ----------, change the facts."- Albert Einstein (1879-1955)?

"I destroy my enemy when I make him my ---------."- Abraham Lincoln (1809-1865)?

"If the grass is ----------- in the other fellow's yard - let him worry about cutting it."- Fred Allen?

"If thine enemy wrong thee, buy each of his children a -----------."- Chinese Proverb?

"If we all did the things we are capable of doing, we would literally -------- ourselves."- Thomas A. Edison?