Albert Einstein:
Imagination is more important than knowledge. For while knowledge defines all we currently know and understand, imagination points to all we might yet discover and create.

Benjamin Spock:
Trust yourself. You know more than you think you do.

Goethe:
Knowing is not enough; we must apply!

Kahlil Gibran:
A little knowledge that acts is worth infinitely more than much knowledge that is idle.

Leonardo da Vinci:
Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.


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