Kato Lomb (1909 - 2003) - famous Hungarian translator, writer, one of the first simultaneous interpreters in the world. She is widely known for her abilities in the field of learning foreign languages. She spoke, read and wrote fluently in Russian, English, French, German. Furthermore, she could speak and understand Italian, Spanish, Japanese, Chinese, Polish. I read with a dictionary in Bulgarian, Danish, Romanian, Slovak, Ukrainian, Latin, Polish.
In her book "This is how I learn languages", she outlined 10 tips for successful language learning which allow you to implement the principle of total language immersion:
Kato Lomb proposed a simple formula that determines the result in language acquisition:
[time spent + interest = result].