You should always assert your rights lest somebody should wrong you unnecessarily.

When you make fun of somebody who is hurt, you add insult to their injury!

The sun that rises at dawn has to set at dusk.

Knowledge is a body of information.

It is not once nor twice but times without number that the same ideas make their appearance in the world.

What we want to do is make a leapfrog product that is way smarter than any mobile device has ever been, and super-easy to use. This is what iPhone is. OK? So, we're going to reinvent the phone.

I didn't see it then, but it turned out that getting fired from Apple was the best thing that could have ever happened to me. The heaviness of being successful was replaced by the lightness of being a beginner again, less sure about everything. It freed me to enter one of the most creative periods of my life.

Molality which depends upon the helplessness of a man or woman has not much to recommend it. Morality is rooted in the purity of our hearts.

Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning. 

Education is an ornament in prosperity and a refuge in adversity.

Things don't have to change the world to be important.

Poverty is the worst form of violence.