Experience is what you get when you don't get what you want. -- Cited by Randy Pausch

A witty saying proves nothing -- Voltaire

Do you want to sell sugared water all your life or do you want to change the world? -- Steve Jobs, to John Sculley (former Pepsi executive)

We really have to get over the idea that some stuff is just worth knowing even if you never do anything with it. Human memories happily erase stuff that has no purpose, so why try to fill up children's heads with such stuff? -- Roger Schank, Engines for Education

Students should be evaluated on how well they can achieve the goals they strived to achieve within a realistic context. Students need to learn to do things, not know things. -- Roger Schank, Engines for Education

The lesson of the story might appear to be that self-interested and ambitious people in power are often the cause of wastefulness in developing countries. But self-interested and ambitious people are in positions of power, great and small, all over the world. In many places, they are restrained by the law, the press, and democratic opposition. Cameroon's tragedy is that there is nothing to hold self-interest in check. -- Tim Harford

Don’t let what you cannot do interfere with what you can do. ~John R. Wooden

It's your place in the world; it's your life. Go on and do all you can with it, and make it the life you want to live. –Mae Jemison

Definiteness of purpose is the starting point of all achievement. –W. Clement Stone

Everything you’ve ever wanted is on the other side of fear. –George Addair