Klopp agreed with the sentiment.
“I could write a book about his skills, strength, how much I like him and what a fantastic person he is; so young, so mature, so strong,” said Klopp.
“Virgil knows he can play better, that we can play better, but in the second half we played as good as possible and necessary in a place like this. It is so important to stay in the game at times and answer all the questions.”
Liverpool’s only concern is a twisted ankle suffered by captain Jordan Henderson, although the initial diagnosis was more positive.
A late booking for Andy Robertson means the full-back will miss the first leg of the quarter-final, which now has four English clubs.
On a night were Liverpool had many outstanding performers, Klopp also paid tribute to Sadio Mane, scorer of the first goal.