Common and vulgar people ascribe all ills that they feel to others; people of little wisdom ascribe to themselves; people of much wisdom, to no one.

Man is not worried by real problems so much as by his imagined anxieties about real problems

Nothing is in reality either pleasant or unpleasant by nature but all things become so through habit

Fortify yourself with contentment, for this is an impregnable fortress.

What is a good person? One who achieves tranquillity by having formed the habit of asking on every occasion, "what is the right thing to do now?"

The good or ill of a man lies within his own will.

It is the nature of the wise to resist pleasures, but the foolish to be a slave to them.