The offender needs pity, not wrath; those who must needs be corrected, should be treated with tact and gentleness; and one must be always ready to learn better. 'The best kind of revenge is, not to become like unto them.'

It is a ridiculous thing for a man not to fly from his own badness, which is indeed possible, but to fly from other men's badness, which is impossible.

A man should always have these two rules in readiness. First, to do only what the reason of your ruling and legislating faculties suggest for the service of man. Second, to change your opinion whenever anyone at hand sets you right and unsettles you in an opinion, but this change of opinion should come only because you are persuaded that something is just or to the public advantage, not because it appears pleasant or increases your reputation.

The whole universe is change and life itself is but what you deem it

Purge your mind of all aimless and idle thoughts, especially those that pry into the affairs of others or wish them ill.

If you are pained by any external thing, it is not this that disturbs you, but your own judgment about it.

Reject your sense of injury, and the injury itself disappears.