人分这么几种：不认识，认识，熟人，朋友，知心朋友。朋友不在当面表白，而是背后说起朋友的时候，是否提到过你。
People can be divided into these types: strangers, acquaintances, familiar people, friends, and close friends. True friendship isn't about compliments to your face, but whether you're mentioned when they talk about friends behind your back.
——《在东京（民报）创刊周年庆祝大会的演说》（1906年12月2日）
心灵是一个不断进化的过程。
The worst pain a man can suffer is to have insight into much and power over nothing.
粗鲁是弱者对强者的模仿。