Reasoning draws a conclusion, but does not make the conclusion certain, unless the mind discovers it by the path of experience. — Roger Bacon Copy Share Image
There are two modes of acquiring knowledge, namely by reasoning and experience. Reasoning draws a conclusion and makes us grant the conclusion,… — Roger Bacon Copy Share Image
[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 Image
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 Image
“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 Image
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 Image
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 Image
All science requires mathematics. [Editors' summary of Bacon's idea, not Bacon's wording.] — Roger Bacon Copy Share Image
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 Image
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 Image
It is easier for a man to burn down his own house than to get rid of his prejudices. — Roger Bacon Copy Share Image
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