Example image of eyePlorer eyePlorer map for 'Idea': Mind Thought Object (philosophy) Representation (psychology) Abstraction Concept Category of being Ontology Philosophy Creativity Human Meaning Understanding Introspection Perception Nature versus nurture Tabula rasa Abstract object Innatism Plato Metaphysics Platonic epistemology Theory of Forms Idealism Reality René Descartes Vernacular Meditations on First Philosophy Neoplatonism Plotinus Arthur Schopenhauer Bertrand Russell Karl Popper Ludwig Wittgenstein David Hume Immanuel Kant Liberty Empirical Subject (philosophy) Universality (philosophy) Epistemology Rudolf Steiner Johann Wolfgang von Goethe Wilhelm Wundt Imagination Memory Psychologist Experiment Apperception Pragmatism