Adventure is an event out of the ordinary without being necessarily extraordinary.

Adventure is not to say "always" but to say "immediately".

Adventure is just a romantic name for trouble.

Adventure is stepping through brand-new doors with your mouth shut and your eyes wide open.

Ambition is the golden mean between sloth and greed.

Ambition is overrated — Climbing is performed in the same posture as creeping.

Ambition is like hunger : it obeys no law but its appetite.

Ambition is most aroused by the trumpet-clang of another's fame.

A Discovery is great, if it is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.

Discovery is secondary to persuasion — In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs.

Discovery is seeing what everybody has seen and thinking what nobody has thought.

Discovery is the ability to be puzzled by simple things.

Entrepreneurship is giving people what they want so that later you can give them what you want.

Entrepreneurship is the last refuge of the trouble-making individual.

Entrepreneurship is a path that demands that one be willing to be misunderstood for long periods of time.

Entrepreneurship is like eating glass and staring into the abyss of death.