Quote by Charles Spearman

"Intelligence is not a single, unitary ability, but rather a general factor that influences performance across diverse cognitive tasks."

"The human mind possesses a general cognitive ability that affects success in all intellectual endeavors."

"Education should aim to develop the general factor of intelligence that underlies all mental abilities."

"Correlation analysis reveals the hidden structures of human thought and ability."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."