Lasker's book delves deeply into all phases of life and struggles. He attempts to create a general theory of all competitive activities, including chess, business and war.
Lasker's Manual of Chess is one of the greatest chess books ever written. The fact that it was first published over 80 years ago has diminished neither its relevance nor significance in today's modern chess world. Lasker was both a wonderful fighter and a deep thinker; his book is the quintessence of the exceptionally successful experiences he had over many long years, and his thoughts about them.
Lasker's Manual of Chess