Typography has no borders. Typography is the design and use of typefaces as a means of visual communication from calligraphy to the ever-developing use of digital type. If you ask me what is typography i will tell you that is art came from the soul through beauty of letterforms and typefaces design.
“Typography is two-dimensional architecture, based on experience and imagination, and guided by rules and readability. And this is the purpose of typography: The arrangement of design elements within a given structure should allow the reader to easily focus on the message, without slowing down the speed of his reading.” Hermann Zapf
Most people think typography is about fonts. Most designers think typography is about fonts. Typography is more than that, it’s expressing language through type. Placement, composition, typechoice. Typography is the written form of what we are thinking or saying inside our heads. Are we speaking distinctly with perfect punctuation or are we throwing out words in rapid fire punctuated with pumping fists and facial grimaces? So, what is actually typography? Do you have a definition of typography? We have!
source : http://www.spicygraphic.com