According to Medium truly intelligent people and are naturally curious. They can't get enough of learning; they chase knowledge and genuinely enjoy learning new skills. They often learn new things and new skills just out of curiosity, even when they know they don't need those skills for their career or for any other purpose.  

Here’s my concise list of what smart people do:
1. Change their minds often
2. Use simple language
3. Admit when they are wrong
4. Ask for help when they are stuck
5. Ask better questions
6. Are self-aware
7. Are comfortable with uncertainty
8. Value soft skills
9. Talk less and say more