Man must be arched and buttressed from within, else the temple wavers to the dust.
Retire into thyself. The rational principle which rules has this nature, that it is content with itself when it does what is just, and so secures tranquility.
Both happiness and unhappiness depend on perception
The most complete revenge is not to imitate the aggressor.
Without a purpose, nothing should be done.
It is the act of a madman to pursue impossibilities .