Speeches / A speech about white lie - can people tell lies in a good faith? [2]

(I hope you can help me revise the speech to make it last 3 minutes)

a protective lie

Good morning everyone. I am very happy to make a speech.
The subject of my speech today is whether people should tell lies in good faith. Some people think that a lie is a lie after all, and it is deceptive anyway, and I think that although a good-faith lie is a lie, it is necessary on some special occasions.

I will share a white lie story about me. Someday, I was working about cell culture with a friend in lab. Suddenly, My boss told me in mandarin: "don't let the person touch any things about cells". Because he didn't have any experience of operating cells. Once the cells were contaminated, it w would be a disaster. Then, he asked me what was boss's means. I told him boss's means was that we should be careful, cause those reagents were toxic.

I lied to him. But I protected him and avoided embarrassment.
So, I think the white lie is also wonderful.