The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.
太阳，带着所有围绕它运行并依赖它的行星，仍然能像在宇宙中没有其他事情可做一样，使一串葡萄成熟。
Mental processes are tools for living, and their worth is in their use.
从有限数据中泛化的能力是有效学习算法的标志。