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We don't receive wisdom; we must discover it for ourselves after a journey that no one can take for us or spare us.

Wisdom is not wisdom when it is derived from books alone.

Wisdom consists not so much in knowing what to do in the ultimate as knowing what to do next.

It's very hard to know what wisdom is.

The wisdom of the wise is an uncommon degree of common sense.

Wisdom is found only in truth.

In order to have wisdom we must have ignorance.

We have heeded no wisdom offering guidance.

If I don't have wisdom, I can teach you only ignorance.

Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.