The brain is a complex machine and this is where your memories originate from. That is why, when you under the effects of alcohol, there is temporary memory loss as the liquor affects your brain. Memory is the psychological process of storing, retaining and recalling information and experiences. The actual concept is that the brain first registers the information by the five senses, creates a permanent/temporary record of this material and retrieves it whenever necessary. If this introduction got too much, then maybe you should read some famous remembrance sayings to lighten up!