Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ikeda Takeyuki,Between Leibniz and Kant: A Brief Consideration on the Background of Humboldt’s Theory of Human Formation,Forum on Modern Education,09196560,History of Educational Thought Society,2020,29,0,16-24,https://cir.nii.ac.jp/crid/1390007902980775040,https://doi.org/10.20552/hets.29.0_16