Stephen Hawking -Keeping an active mind has been vital to my survival,...

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “

“ Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor. “