1. Smart people are not always smart. ——Emerson

2. Smart people are willing to give up money to save their lives. ——Aesop

3. If you are smart, you will understand your ignorance; if you do not understand this, you are ignorant. ——Lu Leng

4. If a smart person does a stupid thing, it will not be a small stupid thing. ——Goethe

5. A wise man often learns something from all things, because the talent he obtains is the essence drawn from all things. ——Ruskin

6. Neither wise men nor fools are harmful, but the most dangerous thing is a mixture of wisdom and foolishness. ——Goethe

7. There are three characteristics of smart people: first, they do what they advise others to do; second, they never do things that go against nature; third, they tolerate the weaknesses of people around them. ——Leo Tolstoy