"El ejercicio físico, cuando es obligatorio, no daña el cuerpo; pero el conocimiento que se adquiere bajo compulsión no encuentra asidero en la mente."

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

“You get what you give. What you put into things is what you get out of them.”

“You are never too old to set another goal or to dream a new dream”

“Successful people are those with successful habits”

“When you repeat a mistake, it is not a mistake anymore: it is a decision.”

“Today is your day, your mountain is waiting. So get on your way.”

“Live for today, hope for tomorrow”

“When inspiration does not come to me, I go halfway to meet it.”

“I'm living proof that dreams do come true.”

“Failure and invention are inseparable twins. To invent you have to experiment, and if you ...”

“Exaggerate the essential, leave the obvious vague.”

“The mind can only think about one thing at a time. Make sure it's the right thing.”