Critias of Athens Quotes, Quotations, and Sayings

2 Famous Quotes by Critias of Athens
[1-2] 
“If you will discipline yourself to make your mind self-sufficient you will thereby be least vulnerable to injury from the outside.”
Discipline Quotes
“If you will discipline yourself to make your mind self-sufficient you will thereby be least vulnerable to injury from the outside.”
Advice / experience / wisdom Quotes