Battle is the most magnificent competition in which a human being can indulge. It brings out all that is best; it removes all that is base. All men are afraid in battle. The coward is the one who lets his fear overcome his sense of duty. Duty is the essence of manhood.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance, one cannot fly into flying

Friedrich Nietzsche

Research is formalized curiosity. It is poking and prying with a purpose

You cannot open a book without learning something

 Confucius

Without pain, there would be no suffering, without suffering we would never learn from our mistakes. To make it right, pain and suffering is the key to all windows, without it, there is no way of life. 

We now accept the fact that learning is a lifelong process of keeping abreast of change. And the most pressing task is to teach people how to learn.

Peter Drucker

Prepare for the unknown by studying how others in the past have coped with the unforeseeable and the unpredictable.

George S. Patton