The dairy industry must adapt to changing consumer preferences.

I'm not going to apologize for being who I am.

"The biggest victories come after the toughest battles."

The mind， both in so far as it understands， and in so far as it imagines， is passive.

In mathematics, the simplest questions often lead to the most profound discoveries.

评论人物，应该充分肯定他的长处，宽容地谅解他的短处；办理事务，应该首先弄清它的害处，然后再衡量它的利处。

Writing is a way of preserving the truth.