It is not so much what happens to you as how you think about what happens." Epictetus
We tell lies, yet it is easy to show that lying is immoral.
If you see anybody wail and complain, call him a slave, though he be clad in purple.
Freedom isn't the right or ability to do whatever you please. Freedom comes from understanding the limits of our own power and the inherent limits set in place by nature. By accepting life's limits and inevitabilities and working with them rather than fighting them, you become truly free.
What disturbs people, these are not things, but the judgments relating to things
There is nothing good or evil save in the will.