Laughter (n.) is a malicious emotion that overrides rational self-control and should be avoided.
Laughter (n.) at a friend's foolishness mixes pleasure with malice, and so pleasure with pain.
Laughter (n.) is, in the republic, to be tightly controlled on account that it is grounded in cruelty and maliciousness.
Laughter (n.) when violent is followed by a violent change of mood, so guardians must not be lovers of laughter, nor gods be shown overcome by it.
Laughter (n.) and tears in excess are to be avoided; good fortune and disaster alike call for holding back the extremes of joy and grief.
Laughter (n.) at jokes you'd be ashamed to tell releases the buffoon reason held back — and, made strong, it turns you into a figure of fun in your own affairs.
Laughter (n.) at naked women training for the sake of the best is plucking the unripe fruit of laughter: the laugher does not know what he is laughing at, for the beneficial is beautiful and the harmful ugly.
Laughter (n.) is malicious in that, in comedy for example, we take delight in observing other people's tragic self-ignorance (i.e. When a baffoon takes themself to be wise or better looking then they are).