[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… — Roger Bacon Copy Share
It is not necessarily impossible for human beings to fly, but it so happens that God did not give them the knowledge of how… — Roger Bacon Copy Share
“Now there are four chief obstacles in grasping truth, which hinder every man, however learned, and scarcely allow anyone to win a clear title… — Roger Bacon Copy Share
There are four great sciences, without which the other sciences cannot be known nor a knowledge of things secured ... Of these sciences the… — Roger Bacon Copy Share
There are in fact four very significant stumbling blocks in the way of grasping the truth, which hinder every man however learned, and scarcely… — Roger Bacon Copy Share
All science requires mathematics. [Editors' summary of Bacon's idea, not Bacon's wording.] — Roger Bacon Copy Share
If in other sciences we should arrive at certainty without doubt and truth without error, it behooves us to place the foundation of knowledge… — Roger Bacon Copy Share
There are in fact four very significant stumblingblocks in the way of grasping the truth, which hinder every man however learned, and scarcely allow… — Roger Bacon Copy Share
It is easier for a man to burn down his own house than to get rid of his prejudices. — Roger Bacon Copy Share
All sciences are connected; they lend each other material aid as parts of one great whole, each doing its own work, not for itself… — Roger Bacon Copy Share
All science requires mathematics. The knowledge of mathematical things is almost innate in us. This is the easiest of sciences, a fact which is… — Roger Bacon Copy Share
