We are pleased to host the 83rd Cold Spring Harbor Symposium which will focus on Brains & Behavior: Order & Disorder in the Nervous System. Previous Cold Spring Harbor Symposia on Function & Dysfunction in the Nervous System in 1996 and Cognition in 2014 explored differing themes in brain research and the 2018 Symposium will build on these successes in exploring the tremendous recent progress in neuroscience and technologies and how these advances may be used to improve brain health and address psychiatric and neurological disorders. The Symposium will begin at 7:30 pm on Wednesday May 30th, and end on Sunday evening, with normal departures on Monday June 4th. The Symposium will include nine oral sessions (invited speakers only) and two poster sessions covering the latest research in diverse areas of behavioral and brain research. The annual Dorcas Cummings lecture will take place on Saturday, June 2nd. Social events throughout the Symposium provide ample opportunity for informal interactions and will include a wine-and-cheese party, a beach picnic, cocktails and banquet, and departure brunch on Monday June 4th.