One Man Alone Had Really Known The

There Are Two Modes Of Knowledge: Through Argument And Through Experience. Argument Brings Conclusions And Compels Us To Concede Them, But It Does Not Cause Certainty Nor Remove Doubts That The Mind May Rest In Truth, Unless This Is Provided By Experience.

It Is Not Necessarily Impossible For Human Beings To Fly, But It So Happens That God Did Not Give Them The Knowledge Of How To Do It. It Follows, Therefore, That Anyone Who Claims That He Can Fly Must Have Sought The Aid Of The Devil. To Attempt To Fly Is Therefore Sinful.

There Are Two Modes Of Acquiring Knowledge, Namely By Reasoning And Experience. Reasoning Draws A Conclusion And Makes Us Grant The Conclusion, But Does Not Make The Conclusion Certain, Nor Does It Remove Doubt So That The Mind May Rest On The Intuition Of Truth, Unless The Mind Discovers It By The Path Of Experience.

But Concerning Vision Alone Is A Separate Science Formed Among Philosophers, Namely, Optics, And Not Concerning Any Other Sense ... It Is Possible That Some Other Science May Be More Useful, But No Other Science Has So Much Sweetness And Beauty Of Utility. Therefore It Is The Flower Of The Whole Of Philosophy And Through It, And Not Without It, Can The Other Sciences Be Known.

[i]f In Other Sciences We Should Arrive At Certainty Without Doubt And Truth Without Error, It Behooves Us To Place The Foundations Of Knowledge In Mathematics, In So Far As Disposed Through It We Are Able To Reach Certainty In Other Sciences And Truth By The Exclusion Of Error.