Geometri, by Mustafa Kemal Atatürk
books.google.com.tr
books.google.com.tr
I could care less about the nationalism, but Atatürk gets some props for reforming the education system through replacing the Arabic script with a phonetic Roman alphabet to reduce illiteracy, and personally translating scientific/mathematic terms/concepts into the new language, and even translating a German geometry textbook.
Imagine if we followed-suit and hired education-oriented mathematicians for our leaders, instead of lawyers and businessmen.