“The only lesson is you have to keep at it.”

“There is only one quality worse than hardness of heart and that is softness of head.”

“Hurt me with the truth. Don’t comfort me with a lie”

“The reasonable man adapts himself to the world: the unreasonable one persists in trying to...”

“I start early, and I stay late, day after day, year after year, it took me 17 years and 11...”

“I didn't come this far to only come this far, so we've still got further to go”

“To forgive the terrorists is up to God, but to send them to him is up to me.”

“Believe you can and you're halfway there”

“Before you diagnose yourself with depression or low self-esteem, make sure that you’re n...”

“Make every detail perfect and limit the number of details to perfect.”

“I would like to die on Mars. Just not on impact.”

“Mistakes are the portals of discovery”

“You can overcome anything, if and only if you love something enough”