Modern examples include humanism, freethinking, and most versions of consequentialism. He has also been a featured speaker at religious, freethinking, and atheist gatherings. He was a prolific author mainly on the topics of anarchism, freethinking, pacifism and Anarcho-naturism. Common themes among freethinking political parties are "freedom", "liberty", and "individualism". Carter became known for his religious freethinking and support of dissenters even before the Revolution. His father educated him at home and exposed him to freethinking philosophy. In Amsterdam he was defeated again, now by the freethinking liberal Nolting. She responded badly to formal education, preferring a freethinking outlook. The artist himself states his work is about "wasting time and freethinking". This freethinking tradition was absorbed into the labour movement. The two groups merged in 1927, becoming the German Freethinking Association in 1930. From 1912 to 1913 he edited the freethinking journal "El Audaz".