学习的挑战不仅在于记忆，还在于从具体例子中归纳出更广泛的概念。
The challenge in learning is not just to memorize, but to generalize from specific examples to broader concepts.
The key to solving complex problems is to break them down into manageable pieces.
Everything can be taken from a man but one thing: the last of the human freedoms—to choose one's attitude in any given set of circumstances.
