経験
Fools say they learn from experience; I prefer to learn from the experience of others.
ビスマルク
https://sonarmc.com/wordpress/site36/2015/12/25/愚者は経験に学び%E3%80%81賢者は歴史に学ぶー翻訳の味/
https://youtu.be/wCG45JDTSW4
「実体験は真実」という主張