The link to an interview with Wolfgang Weingart. For the uninitiated, he is considered to be one of the most influential graphic designer and teacher of the pre digital era(with specific reference to typography). This interview could prove to you the reason for this Basel School instructor's importance to graphic design.
http://www.loremipsum.is/?pid=2441

for more information on the same, visit http://www.weingartarchive.com/