Plus some more:
#1 - little by little.
#5 - pluck the day, from Horace (or "seize the day").
#6 - learn as if always going to live; live as if tomorrow going to die.
#7 - a sleeping dragon must never be tickled.
#8 - they condemn what they do not understand - or - they condemn because they do not understand.
#13 - by Stephen Colbert
#14 - by some anonymous forum user
#15 - by Neitzsche
#16 - by George Bernard Shaw
Latin quotes are from here, Neitzsche's quote is from here, G. B. Shaw's quote is fromhere.
(p.s. - and of course I know that Colbert and Stewart are both married :) )
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