I'm not sure if anyone else has mentioned this, but I always keep a window minimized in the task bar, already set to whatever search engine I prefer. If you solve PART of a quote, you can often do a "search" for the rest. Works well if you also add the author or even "hungarian proverb" to the search
"all men look behind.........."quote by george lucas <enter> or if you only have the end of the quote:
"....... the last days of summer" quote by george lucas
Also, there are many sites you can search for quotes by people, if you have no clue where to begin.IE.....type in.....quotes by george lucas <enter> will give you a list of those sites. Some are easier and quicker than others. Brainyquote is always in alphabetical order so if you have the first few words it's easier.