"The relationship between the worker’s sexual life and the performance of his work is of decisive importance. It is not as if work diverted sexual energy from gratification, so that the more one worked the less need one would have for sexual gratification. The opposite of this is the case: The more gratifying one’s sexual life is, the more fulfilling and pleasurable is one ’s work, if all external conditions are fulfilled. Gratified sexual energy is spontaneously converted into an interest in work and an urge for activity. In contrast to this, one’s work is disturbed in various ways if one’s sexual need is not gratified and is suppressed. Hence, a basic principle of the work hygiene of a work-democratic society is: It is necessary to establish not only the best external conditions of work, but also to create the inner biologic preconditions to allow the fullest unfolding of the biologic urge for activity. Hence, the safeguarding of a completely satisfying sexual life for the working masses is the most important precondition of pleasurable work. In any society the degree to which work kills the joy of life, the degree to which it is represented as a duty (whether to a ‘fatherland’, the ‘proletariat’, the ‘nation’ or whatever other names these illusions may have), is a sure yardstick on which to measure the anti-democratic character of the ruling class of this society."
January 1, 1970
https://en.wikiquote.org/wiki/Work