1. A Curiosity That Consumed Rather Than Produced
Leonardo's notebooks reveal a mind that treated every question as a doorway to several more. He would begin an investigation into the flow of water and end up sketching the branching of rivers, the growth of trees, and the circulation of blood, all within the same sequence of pages. This recursive habit of mind was intellectually thrilling and practically catastrophic. Projects were abandoned not because he lost interest but because the act of investigation itself became the point, rather than any deliverable conclusion. Modern scholars debate whether this reflects a particular cognitive style, a Renaissance ideal of the universal thinker, or simply the absence of institutional pressure to publish and complete.
Why it matters: The pattern challenges the assumption that genius naturally produces finished work. Leonardo's life is a case study in the difference between intellectual fertility and practical output.