Hans Eysenck

"Politics amplifies certain personality traits in leaders"

"War reveals how personality shapes human conflict"

"Motivation differs between personality types fundamentally"

"Inspiration strikes those personalities ready to receive it"

"Relationships reflect the complementary nature of personalities"

"Solitude is not isolation but a personality preference"

"Personality is something that can be objectively measured and has profound implications for how we live our lives."

"The function of education is to teach one to think intensely and to think critically."

"Intelligence tests measure what the brain has learned, not what it is capable of learning."

"Neurosis is just a high score on normal personality dimensions."

"Introverts are not necessarily shy; they simply find social interaction less rewarding than extroverts do."

"Crime and delinquency are not diseases; they are behaviors learned through experience."

"The evidence for hereditary influences on personality is far stronger than most people realize."

"Conditioning shapes our behavior far more than we care to admit."

"Artistic ability, like all abilities, has a significant genetic component."

"The rigidity of the English class system has no parallel in the flexibility of personality types."

"Smoking remains one of the few freedoms left to the individual."

"Political extremism often correlates with certain personality dimensions."

"Dreams are not windows into the unconscious; they are merely the brain's overnight maintenance system."

"The psychopath is not insane; he is simply amoral."

"Creativity requires both high intelligence and certain personality characteristics."

"Intelligence without wisdom leads to clever criminality."

"The obsessive-compulsive personality type achieves success through sheer persistence."

"Sexual behavior is determined by both genetics and early conditioning."

"Superstition and irrationality correlate strongly with certain personality types."

"Happiness is not a destination; it is a personality trait."

"The extravert's need for stimulation can never truly be satisfied."

"Literature reveals truths about personality that psychology often struggles to capture."

"History shows us that personality types repeat their patterns across generations."

"The correlation between intelligence and happiness is weaker than most assume."