“If men learn this, it will implant forgetfulness in their souls; they will cease to exercise memory because they rely on that which is written, calling things to remembrance no longer from within themselves, but by means of external marks. What you have discovered is a recipe not for memory, but for reminder. And it is no true wisdom that you offer your disciples, but only its semblance, for by telling them of many things without teaching them you will make them seem to know much, while for the most part they know nothing, and as men filled, not with wisdom, but with the conceit of wisdom, they will be a burden to their fellows.”

“Crafty men condemn studies; Simple men admire them; And wise men use them: For they teach not their own use: but that is a wisdom without them, and above them, won by observation.”

“Do you know that centuries will pass and mankind will proclaim with the mouth of its wisdom and science that there is no crime, and therefore no sin, but only hungry men? Feed them first, then ask virtue of them.”

“The only true wisdom is in knowing you know nothing.”

“If you learn from many wise men who disagree one another,you will find that there are many wisdoms came out of truth.In the end, you must find truth and define your own wisdom.”

“I am dedicated to the belief that it is God's will that all men should strive for wisdom in themselves, not look to it from some other. Babes, perhaps, must have their food chewed for them by a nurse, but men may drink and eat of wisdom for themselves.”