Dr. Klein is unequivocal in his rejection of evolution (spiritual, not physical):

"This notion of evolution is one of the most characteristic errors of modern thought....It is the belief that more can come out of less, that better can be produced by worse. Evolution in the strict meaning of the word, is only an unfolding, a passing from what is implicit to that which is explicit, from what is not manifest to that which is manifest. It produces nothing. It never produces, let alone creates. We cannot rely on it in our search for salvation or liberation. Liberation is not a problem of evolution, for no evolution can lead to liberation, which is the result of discernment only.... We are not concerned with evolving, but we should endlessly put the question 'who am I?' to ourselves."