Incredulity is not wisdom, but the worst kind of folly. It is folly, because it causes ignorance and mistake, with all the consequents of these; and it is very bad, as being accompanied with disingenuity, obstinacy, rudeness, uncharitableness, and the like, bad dispositions; from which credulity itself, the other extreme sort of folly, is exempt.
Illusion and self-deception stand in the way of an honest, penetrating and fearless self-appraisal. Though it would appear that we have access to the innermost core of our individual being, and that there is nothing in the world with which we are on more intimate terms than our own self, the self remains an elusive object of knowledge and understanding.
Desire for knowledge is the path of honor: desire for wealth is the path of dishonor. Wealth is the chain that slaves wear; knowledge the kingly crown.
Profound ignorance makes a man dogmatic. The man who knows nothing thinks he is teaching others what he has just learned himself; the man who knows a great deal can't imagine that what he is saying is not common knowledge, and speaks indifferently.
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.
Your greatness is measured by your kindness - Your education and intellect by your modesty - Your ignorance is betrayed by your suspicions and prejudices - Your real caliber is measured by the consideration and tolerance you have for others.
There is no knowledge for which so great a price is paid as a knowledge of the world; and no one ever became an adept in it except at the expense of a hardened or a wounded heart.
Whatever study tends neither directly nor indirectly to make us better men and citizens is at best a specious an ingenious sort of idleness; and the knowledge we acquire by it only a credible kind of ignorance, nothing more.
I am not collecting my knowledge from letters and books, but I have it within my own Self; because heaven and earth with all their inhabitants, and moreover God himself, is in man.