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Knowledge is love and light and vision.

Knowledge is of no value unless you put it into practice.

Skill is the unified force of experience, intellect and passion in their operation.

Knowledge is knowing that we cannot know.

Knowledge is power.

Every addition to true knowledge is an addition to human power.

Knowledge is invariably a matter of degree: you cannot put your finger upon even the simplest datum and say this we know.

The knowledge I have now is not the knowledge I had then.

The substitute for knowledge is money.