Men take only their needs into consideration, never their abilities.
Walter Dill Scott
Mental attitude is more important than mental capacity.
Minds are like parachutes - they only function when open.
My attitude is never to be satisfied, never enough, never.
My father gave me the greatest gift anyone could give another person, he believed in me.
Sire Edmund Hillary
Nobody climbs mountains for scientific reasons. Science is used to raise money for the expeditions, but you really climb for the hell of it.
W. W. Ziege
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help with man with the wrong mental attitude.
Nothing is easy to the unwilling.
Nothing is good or bad, but thinking makes it so.
Orison Swett Marden
Obstacles will look large or small to you according to whether you are large or small.