Supported by the following organizations
This is to certify that Sebastian Slabosz successfully completed and received a passing grade in AESTHINT15: Rhetoric: The Art of Persuasive Writing and Public Speaking a course of study offered by HarvardX, an online learning initiative of Harvard University.
Noted by
James Engell
Gurney Professor of English and Professor of Comparative Literature Harvard University
-
- Verified Certificate Issued June 23, 2026
- Valid Certificate ID 5a62aa1ad4a44b7d829542fb5a371917