In The Histories, written in 450 B.C., Herodotus makes the following statement:
"If an important decision is to be made [the Persians] discuss the question when they are drunk and the following day the master of the house...submits their decision for reconsideration when they are sober. If they still approve it, it is adopted; if not, it is abandoned. Conversely, any decision they make when they are sober is reconsidered afterwards when they are drunk."
Source: Dr. Hossein Arsham's web site