To "know thyself" must mean to know the malignancy of one's own instincts and to know, as well, one's power to deflect it.
Karl A. MenningerLove is a medicine for the sickness of the world; a prescription often given, too rarely taken.
Karl A. MenningerSelf love is not opposed to the love of other people. You cannot really love yourself and do yourself a favor without doing other people a favor, and vice versa.
Karl A. MenningerWe need criminals to identify ourselves with, to secretly envy and to stoutly punish. They do for us the forbidden, illegal things we wish to do.
Karl A. MenningerNeurotic means he is not as sensible as I am, and psychotic means he's even worse than my brother-in-law.
Karl A. MenningerWe have come to see that just as the child must learn to love wisely, so he must learn to hate expeditiously, to turn destructive tendencies away from himself toward enemies that actually threaten him rather than toward the friendly and the defenseless, the more usual victims of destructive energy.
Karl A. Menninger