In every systematic inquiry where there are first principles, or causes, or elements, knowledge and science result from acquiring knowledge of these.
We are what we repeatedly do. Excellence, then, is not an act, but a habit.
Parents love their children as themselves; for their issue are by virtue of their separate existence a sort of other selves.
The world will hardly admit of an excuse for a man leaving a coast unexplored he has once discovered.
All men by nature desire to know. An indication of this is the delight we take in our senses; for even apart from their usefulness they are loved for themselves; and above all others the sense of sight. For not only with a view to action, but even when we are not going to do anything, we prefer sight to almost everything else. The reason is that this, most of all the senses, makes us know and brings to light many differences between things.
Wonder is the beginning of wisdom.