ambition

Churchill, 'My Early Life':

Come on now all you young men, all over the world. You are needed more than ever now to fill the gap of a generation shorn by the War. You have not an hour to lose. You must take your places in life's fighting line. Twenty to twenty-five! These are the years! Don't be content with things as they are. 'The earth is yours and the fulness thereof'. Enter upon your inheritance, accept your responsibilities. Raise the glorious flags again, advance them upon the new enemies, who constantly gather upon the front of the human army, and have only to be assaulted to be overthrown. Don't take No for an answer. Never submit to failure. Do not be fobbed off with mere personal success or acceptance. You will make all kinds of mistakes; but as long as you are generous and true, and also fierce, you cannot hurt the world or even seriously distress her. She was made to be wooed and won by youth. She has lived and thrived only by repeated subjugations.

Steve Jobs:

When you grow up you tend to get told the world is the way it is and you're life is just to live your life inside the world.

Try not to bash into the walls too much. Try to have a nice family, have fun, save a little money.

That's a very limited life.

Life can be much broader once you discover one simple fact: Everything around you that you call life was made up by people that were no smarter than you and you can change it, you can influence it, you can build your own things that other people can use.

Once you learn that, you'll never be the same again.