"What's past is prologue" is a quote from Shakespeare's play "The Tempest" that means the past is the introduction or foundation for the present. It suggests that what has already happened has set the stage for current events and the future, emphasizing how history shapes what is to come. This can be interpreted both optimistically, as preparation for opportunities, or pessimistically, as a cycle of inevitable repetition.
The quotation is commonly used in news and commentary to suggest that current events or future situations have their context or origin in historical patterns and actions
- From online + wiki, with editing.
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Two pics below == two thousand words. Have a good Monday! 
1. On Medium
2. Present (1935, Robert Aitken) located on the northeast corner of the National Archives Building in Washington, DC
