"العلم هو والد المعرفة ولكن الرأي يولد الجهل"

“Live as if you were to die tomorrow. Learn as if you were to live forever.”

“He who is not contented with what he has, would not be contented with what he would like to have”

“Twenty years from now you will be more disappointed by the things that you didn't do than ...”

“You know what the happiest animal on Earth is? It's a goldfish. You know why? It's got a 1...”

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

“Wars are not won by fighting battles; wars are won by choosing battles”

“The voice of the intellect is a soft one, but it does not rest until it has gained a hearing.”

“The secret of life is to love what you do”

“All truly great thoughts are conceived while walking”

“Whenever you are asked if you can do a job, tell 'em, 'Certainly I can!' Then get busy and...”

“We're not retreating; we're advancing in different direction;”

“Insanity is doing the same thing over and over and expecting different results.”