自由的代价是愿意在任何地方、任何时间、以完全不计后果的方式进行突然的战斗。

Positive emotions are not trivial luxuries, but instead may be critical necessities for optimal functioning.

The most important thing is to awaken in the child his own will and ability to create.

获胜的意愿很重要，但准备的意愿至关重要。