In this festive season it is perhaps appropriate that we should relax a little the bonds that tether us to the straight and narrow. A fitting apologia for a bit of indulgence and even overindulgence is found in Seneca, On Tranquility of Mind, XVII, 8-9, tr. Basore:
At times we ought to reach even the point of intoxication, not drowning ourselves in drink, yet succumbing to it; for it washes away troubles, and stirs the mind from its very depths and heals its sorrow just as it does certain ills of the body; and the inventor of wine is not called the Releaser [Liber, Bacchus] on account of the license it gives to the tongue, but because it frees the mind from bondage to cares and emancipates it and gives it new life and makes it bolder in all that it attempts. But, as in freedom, so in wine there is a wholesome moderation.
Sed ut libertatis ita vini salubris moderatio est.
. . .
Yet we ought not to do this often, for fear that the mind may contract an evil habit; nevertheless there are times when it must be drawn into rejoicing and freedom, and gloomy sobriety must be banished for a while.