The ability to perceive or think differently is more important than the knowledge gained. David Bohm
In fact, all the additional knowledge gained by an irrationally constituted society may but enlarge and enhance the powers of death and destruction. Paul A. Baran
Philosophical knowledge is the knowledge gained by reason from concepts; mathematical knowledge is the knowledge gained by reason from the construction of concepts. Immanuel Kant
Anyone who can't learn from other people's mistakes simply can't learn, and that; s all there is to it. There is value in the wrong way of doing things. The knowledge gained from errors contributes to our knowledge base. Ben Carson
No matter how mistaken Communist ideas may be, the experience and knowledge gained by trying them out have given a tremendous impetus to thought and imagination. Anne Sullivan Macy
Experience alone can give a final answer. The knowledge gained in a few years by a commission of the kind suggested would be worth more than volumes of mere assertions and contradictions. John Bates Clark