The hardest victory is the victory over self.
Doubt is the beginning of wisdom
For legislators make the citizens good by forming habits in them, and this is the wish of every legislator, and those who do not effect it miss their mark, and it is in this that a good constitution differs from a bad one.
Happiness is a quality of the soul...not a function of one's material circumstances.
The least initial deviation from the truth is multiplied later a thousandfold.
Neither by nature, then, nor contrary to nature do the virtues arise in us; rather we are adapted by nature to receive them, and are made perfect by habit.