“Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.”

“Success is not the key to happiness Happiness is the key to success”

“If you're not stubborn, you'll give up on experiments too soon.”

“If you're watching your competitors, you're unlikely to invent a bunch of stuff on your own.”

“The one unchangeable certainty is that nothing is certain or unchangeable”

“Courage is not having the strength to go on; it is going on when you don't have the strength.”

“Friends congratulate me after a quarterly-earnings announcement and say, 'Good job, great ...”

“The more you know, the more you know you don't know.”

“To be yourself in a world that is constantly trying to make you something else is the grea...”

“Stay true to the mission and remember to keep forging ahead”

“It's not the size of the dog in the fight, it's the size of the fight in the dog.”

“Every startup should address a real and demonstrated need in the world. If you build a sol...”

“Have the courage to follow your heart and intuition. They somehow already know what you tr...”