'Critique of Pure Reason' author, 4 letters
'Critique of Pure Reason' philosopher, 4 letters
'Metaphysics of Morals' author, 4 letters
Categorical imperative man, 4 letters
Categorical imperative philosopher, 4 letters
Copernican revolution philosopher, 4 letters
Critique of Judgement author, 4 letters
Critique of Judgment writer, 4 letters
Critique of Practical Reason author, 4 letters
Critique of Practical Reason writer, 4 letters
Critique of Pure Reason philosopher Immanuel, 4 letters
Critique of Pure Reason writer, 4 letters
Do what is right, though the world may perish writer, 4 letters
Dreams of a Spirit-Seer author, 4 letters
Kritik der reinen Vernunft author, 4 letters
Metaphysics of Ethics author, 4 letters
Metaphysics of Morals philosopher, 4 letters
Metaphysics of Morals writer, 4 letters
Perpetual Peace philosopher, 4 letters
Perpetual Peace thinker, 4 letters
Perpetual Peace writer, 4 letters
Pure reason critiquer, 4 letters
The Metaphysics of Ethics author, 4 letters
The Metaphysics of Morals author, 4 letters
The Metaphysics of Morals writer, 4 letters
The Science of Right writer, 4 letters
18th c. German philosopher, 4 letters
18th century German philosopher, 4 letters
18th-c. German philosopher Immanuel, 4 letters
Critic of pure reason?, 4 letters
Critique of Judgment author, 4 letters
Elightenment philosopher, 4 letters
Enlightenment figure, 4 letters
Enlightenment heavyweight, 4 letters
Enlightenment's Immanuel, 4 letters
Founder of critical idealism, 4 letters
German philosopher Immanuel, 4 letters
German philosopher, 1724-1804, 4 letters
Giant of metaphysics, 4 letters
He wrote the Critique of Pure Reason, 4 letters
Hume influenced him, 4 letters
Idealism philosopher, 4 letters
Key figure in epistemology, 4 letters
Metaphysics giant Immanuel, 4 letters
Moral philosopher Immanuel, 4 letters
Philosopher Immanuel, 4 letters
Philosopher who coined categorical imperative, 4 letters
Philosophy 101 subject, 4 letters
Philosophy major's study, 4 letters
Pure Reason exponent, 4 letters
Writer who coined the phrase categorical imperative, 4 letters
Influential German idealist philosopher (1724-1804), 4 letters
Corner or edge, in Essen, 5 letters
A la philosopher Immanuel, 7 letters
Based on the categorical imperative, 7 letters
Of a major philosopher, 7 letters
Of Immanuel's manuals, perhaps, 7 letters
Of Immanuel's manuals?, 7 letters
Young lady who follows the categorical imperative?, 8 letters
Clinton Commerce Secretary Mickey, 6 letters
Metaphysics of Morals, 9 letters
German philosopher's family, 5 letters
Philosopher Immanuel and namesakes, 5 letters
Antibiotic (trade name Kantrex) used to treat severe infections, 7 letters