Think about it...
Your great grandpa who lived centuries ago and who is still known for the great inventions that he made in the past wrote you a letter!
Ibn Sina the sultan of doctors,
Katip Chelebi the important historian and geographer,
Sinan the great architect,
Rumi the famous poet and author,
Piri Reis the first navigator who drew a world map and
Yunus Emre the poet who captured everyone's hearts with his
...