An expert is someone who knows some of the worst mistakes that can be made in his subject and how to avoid them.
Werner HeisenbergNature is made in such a way as to be able to be understood. Or perhaps I should put it-more correctly-the other way around, and say that we are made in such a way as to be able to understand Nature.
Werner HeisenbergThe exact sciences also start from the assumption that in the end it will always be possible to understand nature, even in every new field of experience, but that we may make no a priori assumptions about the meaning of the word understand.
Werner Heisenberg