Final answer:
The quote by Pearl S. suggests that understanding today requires studying yesterday, highlighting the significance of history in comprehending the present.
Step-by-step explanation:
The quote 'if you want to understand today, you have to search yesterday' by Pearl S. means that in order to comprehend the present, it's necessary to study and explore the past. By analyzing historical events, actions, and outcomes, one can gain valuable insights and knowledge that are relevant to the present. This quote emphasizes the importance of history in understanding the context, developments, and patterns that shape our current world.