context: As Professor of Painting at the Royal Academy he gave a memorable series of lectures to the students of the Schools, published as Six Lectures on Painting (1904) and Aims and Ideals in Art (1906).
source: Clausen was an official war artist during World War I.
reference_original: Clausen era um artista oficial de guerra durante a 1a Guerra Mundial.
reference_flipped: Clausen era uma artista oficial de guerra durante a 1a Guerra Mundial.