心理
I always felt that my greatest asset was not my physical ability, it was my mental ability.
Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands – it’s the upstairs that counts.
"Tennis is a sport where you have to be strong mentally and physically, but the mental part is even more important."
You have to be strong mentally to succeed at the highest level.
The method of psychology must be rigorously empirical.
Psychology must be based on observable phenomena, not abstractions.
The elements of consciousness are the basic constituents of mental phenomena.
The psychologist must be an impartial observer.
The method of psychology must be as exact as the methods of the natural sciences.
Psychology must be a science of phenomena, not noumena.
The elements of consciousness are the irreducible facts of mental life.
The psychologist must avoid all forms of mental physics.
The method of psychology must be strictly controlled.
Psychology must be based on facts, not hypotheses.
The elements of consciousness are the basic data of psychology.
The psychologist must be a dispassionate observer.
Psychology must be a science of description, not explanation.
The elements of consciousness are the fundamental units of psychology.
The psychologist must avoid all forms of mental chemistry.
The method of psychology must be as precise as possible.