Donald Hebb

Neurons that fire together wire together.

Any frequently repeated particular stimulation will lead to the slow development of a 'cell-assembly' as a closed system capable of acting for a relatively long period after the stimulating cause has been removed.

The problem of understanding behavior is the problem of understanding the organization of the brain.

Learning is not just a matter of making connections, but of organizing them.

The brain is not a passive receiver of information, but an active organizer.

The nervous system is not a collection of independent reflexes, but an integrated whole.

The capacity for learning is not fixed, but can be developed through experience.

The environment plays a crucial role in shaping the development of the brain and behavior.

Emotion is a fundamental aspect of behavior and cannot be separated from cognition.

The study of the brain is the most important frontier in science.

Psychology is the science of the mind, but the mind is a product of the brain.

The brain is a complex system, and we are only beginning to understand its workings.

The future of psychology lies in understanding the biological basis of behavior.

The mind is what the brain does.

The brain is the organ of behavior.

The study of behavior is the study of the brain in action.

The brain is constantly changing and adapting to new experiences.

The development of the brain is a continuous process, from conception to old age.

The brain is a dynamic system, not a static one.

The brain is the most complex object in the known universe.