Knowledge without justice ought to be called cunning rather than wisdom.

When you know a thing, to hold that you know it, and when you do not know a thing, to allow that you do not know it - this is knowledge.

Those who do not remember the past are condemned to repeat it.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

Knowledge of what is does not open the door directly to what should be.

Knowledge of what is does not open the door directly to what should be.

All great achievements require time.

What would life be if we had no courage to attempt anything?

What would life be if we had no courage to attempt anything?

To know, is to know that you know nothing. That is the meaning of true knowledge.