Loneliness is the poverty of self; solitude is the richness of self.
勇氣是所有美德中最重要的，因為沒有勇氣，你就無法始終如一地實踐其他美德。
No testimony is sufficient to establish a miracle unless the testimony be of such a kind that its falsehood would be more miraculous than the fact which it endeavors to establish.
The bird that would soar above the level plain of tradition and prejudice must have strong wings. It is a sad spectacle to see the weaklings bruised, exhausted, fluttering back to earth.
真正的樂趣在于發(fā)現(xiàn)，而不是知道。
Our approach is to observe carefully before acting.