48 Quotes by Roger Bacon

One man alone had really known the sciences, namely, Robert, Bishop of Lincoln.

All science requires mathematics.

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.

All science requires mathematics. [Editors' summary of Bacon's idea, not Bacon's wording.]

A little learning is a dangerous thing but none at all is fatal.

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.

Argument is conclusive, but it does not remove doubt.

Half of science is asking the right questions.

There are four great sciences, without which the other sciences cannot be known nor a knowledge of things secured ... Of these sciences the gate and key is mathematics ... He who is ignorant of this [mathematics] cannot know the other sciences nor the affairs of this world.