I shall do down in history as the man who opened a door!
Nothing is so much to be feared as Evil Report.
Inaction saps the vigor of the mind.
Truth is so excellent, that if it praises but small things they become noble.
No human investigation can be called real science if it cannot be demonstrated mathematically.
Perspective is a most subtle discovery in mathematical studies, for by means of lines it causes to appear distant that which is near, and large that which is small.