It was modesty that invented the word "philosopher" in Greece and left the magnificent overweening presumption in calling oneselfwise to the actors of the spirit--the modesty of such monsters of pride and sovereignty as Pythagoras, as Plato.
Compassion suits our physical condition, whereas anger, fear and distrust are harmful to our well-being. Therefore, just as we learn the importance of physical hygiene to physical health, to ensure healthy minds, we need to learn some kind of emotional hygiene.
Through zeal, knowledge is gotten, through lack of zeal, knowledge is lost; let a man who knows this double path of gain and loss thus place himself that knowledge may grow.