Sometimes a scream is better than a thesis. Manfred Eigen More Quotes by Manfred Eigen More Quotes From Manfred Eigen A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant. Manfred Eigen technology math science One will only be free when one plays and one's society will become a piece of art". - Herbert Marcuse Manfred Eigen fun men art A theory has only the alternative of being wrong. A model has a third possibility - it might be right but irrelevant. Manfred Eigen A theory can be proved by experiment; but no path leads from experiment to the birth of a theory. Manfred Eigen experiment birth theory path In theory, there is no difference between theory and practice. But, in practice, there is. Manfred Eigen between difference theory practice