Keeping an active mind has been vital to my survival, as has been maintaining a sense of humor.
Stephen HawkingWe each exist for but a short time, and in that time explore but a small part of the whole universe
Stephen HawkingKeeping an active mind has been vital to my survival, as has been maintaining a sense of humor.
Stephen HawkingWe each exist for but a short time, and in that time explore but a small part of the whole universe
Stephen Hawking