Science admits no exceptions; otherwise there would be no determinism in science, or rather, there would be no science. - Claude Bernard

Science does not permit exceptions.

[T]he science of life […] is a superb and dazzlingly lighted hall which may be reached only by passing through a long and ghastly kitchen.

Leçons sur les Phénomènes de la Vie Communs aux Animaux et aux Végétaux.

Ardent desire for knowledge, in fact, is the one motive attracting and supporting investigators in their efforts; and just this knowledge, really grasped and yet always flying before them, becomes at once their sole torment and sole happiness.… [A] man of science rises ever, in seeking truth; and if he never finds it in its wholeness, he discovers nevertheless very significant fragments; and these fragments of universal truth are precisely what constitutes science.