Mathematics Is The Key And Door To

The Universe Is A Grand Book Which Cannot Be Read Until One First Learns To Comprehend The Language And Become Familiar With The Characters In Which It Is Composed. It Is Written In The Language Of Mathematics.

Science Proceeds More By What It Has Learned To Ignore Than What It Takes Into Account.

When The Moon Is Ninety Degrees Away From The Sun It Sees But Half The Earth Illuminated (the Western Half). For The Other (the Eastern Half) Is Enveloped In Night. Hence The Moon Itself Is Illuminated Less Brightly From The Earth, And As A Result Its Secondary Light Appears Fainter To Us.

It Is A Beautiful And Delightful Sight To Behold The Body Of The Moon.

I Am Certainly Interested In A Tribunal In Which, For Having Used My Reason, I Was Deemed Little Less Than A Heretic. Who Knows But Men Will Reduce Me From The Profession Of A Philosopher To That Of Historian Of The Inquisition!