Leonardo virtually announced the birth of the method of modern science when he said that true knowledge begins with opinion. - John Dewey

The two limits of every unit of thinking are a perplexed, troubled, or confused situation at the beginning, and a cleared up, unified, resolved situation at the close.

our daily associations cannot be trusted to make clear to the young the part played in our activities by remote physical energies, and by invisible structures. Hence a special mode of social intercourse is instituted, the school, to care for such matters.

The other conclusion is that art is the complement of science. Science as I have said is concerned wholly with relations, not with individuals. Art, on the other hand, is not only the disclosure of the individuality of the artist but also a manifestation of individuality as creative of the future, in an unprecedented response to conditions as they were in the past. Some artists in their vision of what might be, but is not, have been conscious rebels. But conscious protest and revolt is not the form which the labor of the artist in creation of the future must necessarily take. Discontent with things as they are is normally the expression of the vision of what may be and is not, art in being the manifestation of individuality is this prophetic vision.