Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it.
Where: Stanford University Commencement Speech, 2005
Inspiration at its best. Jobs didn't settle or compromise his convictions, even when such adherence resulted in his ousting from the company he founded. His persistence in following his dreams and bringing them to life remains admired by many and recognized by all.