There are three principal means of acquiring knowledge... observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination.
There's nothing more important than our good health - that's our principal capital asset.
Our life is a book that writes itself and whose principal themes sometimes escape us. We are like characters in a novel who do not always understand what the author wants of them.
Love is something far more than desire for sexual intercourse; it is the principal means of escape from the loneliness which afflicts most men and women throughout the greater part of their lives.
All animals, except man, know that the principal business of life is to enjoy it.
Literature has as one of its principal allures that it tells you something about life that life itself can't tell you. I just thought literature is a thing that human beings do.
I had to get good grades and do well in school - my mother was an assistant principal and my father was a teacher - and they took this very seriously.
We need to make Net Neutrality the law. We need to elect a Congress that will make it a priority to keep this important principal intact - and insure equal and open access to the Internet for all.
What interests me is the sense of the darkness that we carry within us, the darkness that's akin to one of the principal subjects of the sublime - terror.
It urges policy makers and the Supreme Court to make the mistake of curing what could prove to be an isolated problem by disarming the government of its principal weapon to stop future terrorist attacks.