「学而时习之，不亦说乎」
“Is it not a pleasure to learn and practice what you have learned from time to time?”
—— 论语学而时习之，不亦说乎：学了还要按时温习——悦来自熟练与回响，不是一次性兴奋。论语开篇即方法论。今日：收藏很多时，问你「时习」了几条。
Learn and timely practice—is that not pleasure? Joy from fluency and return, not one-shot excitement. Analects opens as method. Today: when bookmarks pile up, ask how many you timely practiced.