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" "لا جدوى من الإنتقاد الذي يضع الإنسان موضع المدافع عن نفسه لتبرير أفعاله ولأن الانتقاد يجرح كبريائه ويؤذي إحساسه.
في الجيش الألماني مثلاً، لا يدع الجندي يقدم شكواه مباشرة إذا حدث شئ بل عليه التروي حتى يهدأ.. وهو إن قدم شكواه مباشرة تتم معاقبته.
Dale Harbison Carnegie [originally Carnagey until 1919] (November 24, 1888 – November 1, 1955) was an American writer, lecturer and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking and interpersonal skills. Born in poverty on a farm in Missouri, he was the author of How to Win Friends and Influence People, first published in 1936, a massive bestseller that remains popular today. He also wrote a biography of Abraham Lincoln, entitled Lincoln the Unknown, as well as several other books.
Biography information from Wikiquote
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B.F. Skinner, the world-famous psychologist, proved through his experiments that an animal rewarded for good behaviour will learn much more rapidly and retain what it learns far more effectively than an animal punished for bad behaviour. Later studies have shown that the same applies to humans. By criticising, we do not make lasting changes and often incur resentment.