Sinek, Simon. Start with Why: How Great Leaders Inspire Everyone to Take Action. 15th anniversary edition. Portfolio / Penguin, 2025. Ebook ISBN 9798217045648.
Simon Sinek, Start with Why: How Great Leaders Inspire Everyone to Take Action, 15th anniversary ed. (Portfolio / Penguin, 2025), supplied PDF sheets71–75,166–169,181–193.
193
71
Sinek, Start with Why (2025), supplied PDF sheets71–75,166–169,181–193.
Purpose, actions, consistency, Celery Test and succession
Metadata checked from supplied title/copyright pages; all277supplied sheets read and16visuals inspected. PDF sheet numbers differ from print index. Critical primary checks linked in Literature Note.
Citation Scope
Use supplied PDF sheet locators, not the printed-page index. Full review covers277sheets. A citation attributes the author's argument; it does not validate his neuroscience, causal claims or historical statistics.