This section contains an extended treatment of Epicurean views, especially the following:, in which we will have to be cautious, as Cicero himself seems to say that he is stating them differently than would the Epicureans:
Quote from Part 3 Section XVBut I shall speak more particularly on these matters after I have first considered Epicurus's opinion, who thinks that all people must necessarily be uneasy who believe themselves to be in any evils, let them be either foreseen and expected, or habitual to them; for, with him, evils are not the less by reason of their continuance, nor the lighter for having been foreseen; and it is folly to ruminate on evils to come, or such as, perhaps, never may come; every evil is disagreeable enough when it does come; but he who is constantly considering that some evil may befal him, is loading himself with a perpetual evil, and even should such evil never light on him, he voluntarily takes upon himself unnecessary misery, so that he is under constant uneasiness, whether he actually suffers any evil, or only thinks of it. But he makes the alleviation of grief depend on two things, a ceasing to think on evil, and a turning to the contemplation of pleasure. For he thinks that the mind may possibly be under the power of reason, and follow her directions; he forbids us, therefore, to mind trouble, and calls us off from sorrowful reflections: he throws a mist over our eyes to hinder us from the contemplation of misery. Having sounded a retreat from this statement, he drives our thoughts on again, and encourages them to view and engage the whole mind in the various pleasures with which he thinks the life of a wise man abounds, either from reflecting on the past, or from the hope of what is to come. I have said these things in my own way, the Epicureans have theirs: however, let us examine what they say; how they say it is of little consequence.