That is a highly subjective question, and the answer depends on how you define "best":

- The most common language for modern web development is **JavaScript**, so if web development is your goal then learning JavaScript may be the best option for you.
- The most common language for scientific computing and machine learning is **Python**. If you are interested in either of those fields, then you may want to learn Python.
- The most common languages for low-level systems programming and embedded programming are **C** and **C++**. If you are interested in either of those fields, then you may want to learn one or both of those.
- The programming language **Rust** has been for several years listed as the most loved language in StackOverflow surveys. This is also suited for low-level systems programming.
- **Java** is still ubiquitous in enterprise programming, and is frequently the main language of the curriculum at many universities.
- Some people believe that functional programming is the best form of programming; if you agree, then likely the best language for you to learn is a functional programming language like **Haskell**, **Scala**, or **OCaml**.
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