Criticism of others is futile and if you indulge in it often you should be warned that it can be fatal to your career.
Dale CarnegieYour thoughts make you what you are; by changing our # thoughts we can change our lives.
Dale CarnegieLet's find and remedy all our weaknesses before our enemies get a chance to say a word. That is what Charles Darwin did. ...When Darwin completed the manuscript of his immortal book "The Origin Of Species" he realized that the publication of his revolutionary concept of creation would rock the intellectual and religious worlds. So he became his own critic and spent another 15 years checking his data, challenging his reasoning, and criticizing his conclusions.
Dale Carnegie