habile
adj. able or skillful

philobiblian
n. a book lover

tachydidaxy
n. a short method of teaching

telesis
n. the intelligent direction of effort toward the achievement of an end

Mathematician Theodor Molien was fluent in German, Estonian, French, Swedish, Greek, Hebrew, Latin, English, Italian, Spanish, Portuguese, Dutch, and Norwegian.

“Read a hundred novels in a language,” he liked to say, “and you will know that language.”