"To read a newspaper is to refrain from reading something worth while. The first discipline of education must therefore be to refuse resolutely to feed the mind with canned chatter."

"The people who have really made history are the martyrs."

"Science is always discovering odd scraps of magical wisdom and making a tremendous fuss about its cleverness."

"The conscience of the world is so guilty that it always assumes that people who investigate heresies must be heretics just as if a doctor who studies leprosy must be a leper. Indeed, it is only recently that science has been allowed to study anything without reproach."

"I was brought up to believe that there is no such thing as failure as long as I'm trying my best. So I've had a 'blood, guts and glory' approach through my whole life."

"Discipline is based on pride, on meticulous attention to details, and on mutual respect and confidence. Discipline must be a habit so ingrained that it is stronger than the excitement of the goal or the fear of failure."

"In tennis, it is not the opponent you fear, it is the failure itself, knowing how near you were but just out of reach."

"Marriage can be expensive, and if I lose millions then it'll be the best millions I've spent."