Misc: what was mona lisa's surname?

Questions

"--------- as if everything depended on God, and work as if everything depended upon man."- Cardinal Francis J. Spellman?

"Choose your friends by their character and your socks by their color. Choosing your socks by their ---------- makes no sense, and choosing your friends by their color is unthinkable."- Anon.?

"---------------, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important."- Clive Staples Lewis (1898-1963)?

"Christmas is over and Business is Business."- Franklin Pierce Adams?

"-------------. Millions of people being lonesome together."- Henry David Thoreau?