Obviously if any actions, even a lunatic's, can be causeless, determinism is done for.
As for the latter, we should not exaggerate its determinism.
So that one may say, without contradiction, that determinism envelops the world, and that free-will constitutes it.
I have discussed this question at length in my "determinism or Free Will."
It is true that theoretical study may weaken practical interest; but Indeterminism is a theory as well as determinism.
Free-will and determinism—what are these but the very breath of classic tragedy!
All determinism will thus be refuted by experience, but every attempt to define Freedom will open the way to determinism.
This is the theory of determinism, and I will now explain it.
The enormous change was that determinism had been transferred from ends to means; and indeterminism from means to ends.
Socialism, determinism, and Rationalism are factors in the sum; and the sum is Humanism.
1846, in theology (lack of free will); 1876 in general sense of "doctrine that everything happens by a necessary causation," from French déterminisme, from German Determinismus, perhaps a back-formation from Praedeterminismus (see determine).
determinism de·ter·min·ism (dĭ-tûr'mə-nĭz'əm)
The philosophical doctrine that every event, act, and decision is the inevitable consequence of antecedents, such as genetic and environmental influences, that are independent of the human will.