There is no permanent status quo in nature; all is the process of adjustment and readjustment, or else eventual failure. But man is the… — Hermann Joseph Muller Copy Share Image
To say that a man is made up of certain chemical elements is a satisfactory description only for those who intend to use him… — Hermann Joseph Muller Copy Share Image
The central problem of biological evolution is the nature of mutation, but hitherto the occurrence of this has been wholly refractory and impossible to… — Hermann Joseph Muller Copy Share Image
Natural selection based on the differential multiplication of variant types cannot exist before there is material capable of replicating itself and its own variations,… — Hermann Joseph Muller Copy Share Image
