外游者，求备于物；内观者，取足于身。
解释：向外物游览就要要求外物的完备，向自己内心求取，则能充实完善自身。
态度上的弱点会变成性格上的弱点。
领导力在于以同情心和远见做出艰难的决定。
Every problem in mathematics has a solution; you just have to find the right path.
"The past is never dead; it’s not even past until we’ve written it."