Please excerpt one of the famous sayings related to truth:

1. Anyone who takes the truth lightly in small matters is also untrustworthy in big matters. ——Einstein

2. Without considerable independent effort, no matter how serious the issue is, the truth cannot be found; whoever is afraid of hard work will not be able to find the truth. ——Lenin

3. The main characteristic of a well-trained thinker is that he does not easily draw conclusions without sufficient evidence. ——Beveridge

4. In order to pursue light and heat, people would rather give up their own lives. Life is lovely. But a cold, lonely life is not as good as a vigorous death. ——Ba Jin

5. For one person to discover fruitful truths, millions of people need to destroy their lives through failed explorations and tragic mistakes.

——Mendeleev

6. In terms of truth and knowledge, anyone who considers himself an authority will surely collapse in the laughter of God! ——Einstein