Praxis Grammatica - Patience is a Virtue

The 17th century Praxis Grammatica tells you what patience is for:

[ 301 ] Antidotum vitae, Patientia est. [English Translation]

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Praxis Grammatica gives great examples of Latin sentences in the guise of wondrously useful advice. Please feel free to post your interpretation of this bit of Latin and when it would be used.