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Steven Hawking:--"My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all."
Reference:- http://www.quotedb.com/authors/stephen-hawking
Florance Nightingale:-
-"How very little can be done under the spirit of fear".
Reference:- http://www.saidwhat.co.uk/quotes/famous/florence_nightingale
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Jane Goodall:-
-"The least I can do is speak out for those who cannot speak for themselves".
Reference:- http://womenshistory.about.com/od/quotes/a/jane_goodall.htm