The understanding of mathematics is necessary for a sound grasp of ethics.
Admitting one's ignorance is the first step in acquiring knowledge.
I know what I do not know.
The bad one is that way because of the ignorance, therefore he can be healed with wisdom.
I am that gadfly which God has attached to the state, and all day long and in all places am always fastening upon you, arousing and persuading and reproaching you.
Follow the argument wherever it leads.