"Every difficulty in life presents us with an opportunity to turn inward and to invoke our own resources. The challenges to our spirit are not to be avoided, but embraced."

"Men are disturbed not by things, but by the views which they take of them."

"If a man has a bad smell, he may be asked, 'To what does this belong?' To a man. 'Yes, but to a bad man.' To a bad man? 'Yes, for he is a beast.'"

"To be happy is to desire nothing, since a man who desires something is not happy, but rather miserable, if he does not get what he desires."

"To a reasonable creature, that alone is insupportable which is unreasonable; but everything reasonable may be supported."