"La diferencia entre ganar y perder es muy a menudo no rendirse."

“A friend to all is a friend to none.”

“Every failed experiment is one step closer to success.”

“The old that is strong does not wither, deep roots are not reached by the frost”

“Whatever the problem, be part of the solution. Don't just sit around raising questions and...”

“You only live once, but if you do it right, once is enough.”

“Give me six hours to chop down a tree and I will spend the first four sharpening the axe.”

“You have power over your mind—not outside events. Realize this, and you will find strength ”

“There is no way around hard work, embrace it”

“We all have two lives. The second one starts when we realize we only have one”

“You learn more in failure than you ever do in success”

“It is easy to love your friend, but sometimes the hardest lesson to learn is to love your enemy.”

“All you have to do is pay attention: lessons always arrive when you are ready.”