wisdom

Wisdom is the ability to know what is true or right, common sense or the collection of one's knowledge. (noun)

An example of wisdom is the quote "The best mind altering drug is truth."

See wisdom in Webster's New World College Dictionary

noun

the quality of being wise; power of judging rightly and following the soundest course of action, based on knowledge, experience, understanding, etc.; good judgment; sagacity
learning; knowledge; erudition: the wisdom of the ages
Now Rare wise discourse or teaching
Wisdom of Solomon
a wise plan or course of action

See wisdom in American Heritage Dictionary 4

(wĭzˈdəm)

noun

The ability to discern or judge what is true, right, or lasting; insight.
Common sense; good judgment: “It is a characteristic of wisdom not to do desperate things” (Henry David Thoreau).
a. The sum of learning through the ages; knowledge: “In those homely sayings was couched the collective wisdom of generations” (Maya Angelou).
b. Wise teachings of the ancient sages.
A wise outlook, plan, or course of action.
Wisdom Bible Wisdom of Solomon.