See, according to Darwin, if we assume that life and its origin was created from non organic compounds and developed an unguided manner, his theory holds true.
It's founded on evidence that non organic, which is another synonym or another way of saying non-life, compounds are the basis of life developed in an unguided way, unguided as a synonym for indirect.
Life at its origin, life at its beginning, before it developed, was created from non organic compounds, from non-life developed, which is another way of saying progressed, unguided manner, which is another way of saying indirect.