quotes by Dean Karnazes

"Run when you can, walk if you have to, crawl if you must; just never give up. "
— Dean Karnazes

"Unless you're not pushing yourself, you're not living to the fullest. You can't be afraid to fail, but unless you fail, you haven't pushed hard enough."
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— Dean Karnazes (50/50: Secrets I Learned Running 50 Marathons in 50 Days -- and How You Too Can Achieve Super Endurance!)