Constructivism appears in several distinct philosophical domains. In epistemology, constructivism (Kant, Piaget,
Nelson Goodman) holds that knowledge is not discovered but constructed through cognitive and cultural processes. In
mathematics, constructivism (Brouwer's intuitionism) holds that mathematical objects exist only insofar as they can be constructed by a finite procedure. In social theory, social constructivism (Berger and Luckmann) holds that social reality is constructed through intersubjective practices and shared meanings. In ethics, constructivism (Rawls, Scanlon) holds that moral principles are constructed by rational agents rather than discovered in a mind-independent moral reality. For poets, constructivism has far-reaching implications: the poem does not reflect a pre-given world but constructs one; identity is not found but made; even the self that speaks in the
lyric is a construction. Related terms: social construction, Goodman's world-making, Rawlsian constructivism, intuitionism, anti-
realism.