理性服从自己；无知则服从任何强加于它的东西。
Reason obeys itself; and ignorance submits to whatever is dictated to it.
"The future is not a result of choices among alternative paths offered by the present, but a place that is created—created first in the mind and will, created next in activity."
The pursuit of knowledge is a journey without end, and that's what makes it exciting.