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."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."