Is wisdom a proper noun

No, the noun wisdom is a common noun, a Word for wisdom of any kind.

A proper noun is the name of a person, place, thing, or a title; for example:

• Dr. Jill C. Wisdom DPM, Podiatric Surgeon, Plano, TX
• Wisdom, MT 59761
• Wisdom Street, Chattanooga, TN or Wisdom Street, Hughes ACT, Australia
• "Wisdom", 1987 movie with Emilio Estevez as John Wisdom