"Avoid all refined speculations; confine yourself to simple reflections, and recur to them frequently. Those who pass too rapidly from one truth to another feed their curiosity and restlessness; they even distract their intellect with too great a multiplicity of views. Give every truth time to send down deep root into the heart."

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Our challenges may be new. The instruments with which we meet them may be new. But those values upon which our success depends -- honesty and hard work, courage and fair play, tolerance and curiosity, loyalty and patriotism -- these things are old. These things are true. They have been the quiet force of progress throughout our history. What is demanded, then, is a return to these truths.

— Barack Obama