Our usual imprecise mode of observation takes a group of phenomena as one and calls it a fact: between this fact and another fact it imagines in addition an empty space, it isolates every fact. In reality, however, all our doing and knowing is not a succession of facts and empty spaces but a continuous flux. Now, belief in freedom of will is incompatible precisely with the idea of a continuous, homogeneous, undivided, indivisible flowing: it presupposes that every individual action is isolate and indivisible; it is an atomism in the domain of willing and knowing.
