David Rauschenbach

... Yelov had a very original view about mental work. He once said:

It's all the same. our thoughts work day and night. instead of allowing them to think about caps of invisibility or the riches of Aladdin, rather let them be occupied with something useful. In giving direction to thought, of course a certain amount of energy is spent, but no more is needed for this purpose in a while day than for the digestion of one meal. I therefore decided to study languages—not only to prevent my thoughts from idling but also not to allow them to hinder my other functions with their idiotic dreams and childish phantasies. Besides, the knowledge of languages can in itself sometimes be useful.