“The emergence of Taekwon-Do as an international martial art in a relatively short period of time was due to a variety of factors. The evils of contemporary society (moral corruption, materialism, selfishness, etc.) had created a spiritual vacuum. Taekwon-Do was able to compensate for the prevailing sense of emptiness, distrust, decadence and lack of confidence.”
Excerpt from History of Taekwon-Do, Encyclopedia of Taekwon-Do, Vol. 1, page 39, by Choi Hong Hi.