?Ought? and ?Must?

Contrary-To-Duty Imperatives and Deontic Logic

Roderick M. Chisholm · Analysis · 1963 · 363 citations

Humanities, Philosophy, Pragmatics +8

Imperatives and Logic

Afl Ross · 1941 · 183 citations

Ideality, sub-ideality and deontic logic

Andrew Jones, Ingmar P�rn · Synthese · 1985 · 106 citations

Humanities, Philosophy, Logic +10

On the Illusion of Consciousness

Alf Ross · Theoria · 1941 · 93 citations

Humanities, Neuroscience, Psychology +8

The Significance of Sense: Meaning, Modality, and Morality.

Gilbert Harman, Roger Wertheimer · The Philosophical Review · 1973 · 56 citations

Social Sciences, Philosophy, Psychology +10