There is no hope without action.
行动之外再无希望。
"Mathematics is not a spectator sport."
孩子的精神比一般人认为的更为高尚。
He who wants to do good knocks at the gate； he who loves finds the gate open。
The heart is a lonely hunter, and it will always be so.
心灵是解释行为时不必要的建构。