Scientists often have a naive faith that if only they could discover enough facts about a problem, these facts would somehow arrange themselves in a compelling and true solution.
Theodosius DobzhanskyNo evidence is powerful enough to force acceptance of a conclusion that is emotionally distasteful.
Theodosius DobzhanskyThe living world is not a single array... connected by unbroken series of intergrades.
Theodosius DobzhanskySeen in retrospect, evolution as a whole doubtless had a general direction, from simple to complex, from dependence on to relative independence of the environment, to greater and greater autonomy of individuals, greater and greater development of sense organs and nervous systems conveying and processing information about the state of the organism's surroundings, and finally greater and greater consciousness. You can call this direction progress or by some other name.
Theodosius Dobzhansky