Rearranging the letters of 'Stephen William Hawking' (Cosmologist, science writer b. 1942) gives:
When willing, I speak Math.
(by V.Rabin) (2003)
Other related anagrams without their own page:
"The theoretical physicist Stephen William Hawking" -> ""Time/space was spherical" thinking? - Hey, to hell with it!" (by David Bourke using Anagram Genius) (2004)
"Professor Stephen Hawking" -> "Ass? He knew of proper things." (by Stanley Accrington by hand) (2008) (pending approval)
"Professor Stephen William Hawking." -> "Know-all, whispering phrases of time." (by Tony Crafter using Anagram Genius) (2009) (pending approval)
"Stephen Hawking" -> "Pawn? He's the King!" (by Mick Tully using Anagram Genius) (2003)
"Stephen Hawking" -> "P.S. He knew a thing." (by Rick Rothstein using Anagram Genius) (2003)
"Standing on the Shoulders of Giants" -> "Insane daftness, drooling thoughts." (by Robert Parrott using Anagram Genius) (2005)
"Isaac Newton" -> "Action wanes." (by Bob Hanford) (2005)
"Isaac Newton" -> "Contains awe." (by Bob Hanford) (2005)
"Isaac Newton" -> "Was once a nit." (by Stanley Accrington by hand) (1994)
"Physicist Sir Isaac Newton" -> "So sharp! (in scientistic way)" (by Aronas Pinchas) (2005)
"Albert Einstein General Theory of Relativity." -> "Irreverently bestial threaten agility of one." (by Jim Bond using Anagram Genius) (2006) (pending approval)
"Sh! meet Albert Einstein" -> "He relates bents in time!" (by shantanu shirpure by hand) (2009) (pending approval)
"Professor Albert Einstein" -> "Top lesson: refer brainiest!" (by Mike Mesterton-Gibbons by hand) (2006) (pending approval)
"Einstein" -> "I intense." (by Aronas Pinchas) (2005)