Einstein, a clerk in the Swiss Federal Patent Office, what made him a great scientist?

1. First of all, he has a strong interest in physics, so whether he is a clerk, a civil servant or a farmer, he will find some time to play with physics. For him, it is a kind of enjoyment, just like an alcoholic drinking every day.

2. Secondly, he is really gifted in physics. He is very good at logical thinking and image thinking, but he can sort out the complicated problems for others.

3. Thirdly, he has a firm belief in science. He firmly believes in the knowability of the world and that the understanding of the world can be deepened to some extent through science. This belief gives him great motivation and perseverance to overcome all kinds of difficulties and achieve success.

4. Thirdly, thanks to the development of science in the society, people have the ability to prove his theory, otherwise, his theory will not be accepted so quickly.

5. Finally, part of the reason why he started as a professional scientist was that he couldn't find other suitable jobs, even his first job was found with great efforts. Ha ha.

In a word, all the factors together make him a great scientist.