Source: Between Man and Man (1965), p. 147
“Nothing is more unmannerly than to reflect on any man's profession, sect, or natural infirmity. He who stirs up against himself another's self-love, provokes the strongest passion in human nature.”
The Dignity of Human Nature (1754)
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James Burgh 49
British politician 1714–1775Related quotes
                                        
                                        The Educational Theory of Immanuel Kant (1904) 
Context: Man has his own inclinations and a natural will which, in his actions, by means of his free choice, he follows and directs. There can be nothing more dreadful than that the actions of one man should be subject to the will of another; hence no abhorrence can be more natural than that which a man has for slavery. And it is for this reason that a child cries and becomes embittered when he must do what others wish, when no one has taken the trouble to make it agreeable to him. He wants to be a man soon, so that he can do as he himself likes.
Part III : Selection on Education from Kant's other Writings, Ch. I Pedagogical Fragments, # 62
                                    
“But man is a part of nature, and his war against nature is inevitably a war against himself.”
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 565.