Liverpool have yet to scale the attacking peaks they hit during last season's run to the Champions League final.
"I am long enough now in this business to know no one plays a flawless season - not even [Manchester] City a year ago played a ideal season", he said.
The Reds continued their flawless start to the Premier League by prevailing 2-1 at Wembley on Saturday, but they should have been out of sight before Tottenham staged their late fightback.
Klopp said: 'The cool element of our club is when you hear Liverpool plays PSG, you don't think we are without a chance any more. "I'm long enough in this business to know that nobody plays a flawless season", the coach further added. The result is most important and the results flawless.
"I can't prepare a team to face Paris Saint-Germain without showing them the strengths of Paris", Klopp said.
"I'm not a personality to wait for problems, but I'm old enough to know they will come".
The Brazilian suffered an eye injury against Tottenham and is unlikely to play.
Klopp went on to say: "I love my players, all of them, I wouldn't change them but I watched Paris, I watched them last year and I watched them this year, and it is impressive".
"If it's late in the season that you see you have a chance to do that or do this and all that stuff".
"In the preparation, I have to make sure we know about it".
The Reds are still aiming to win their first trophy since Klopp's appointment at Anfield back in October 2015. PSG were also knocked out by Real Madrid, failing to get past the round of 16 for the second straight season. "We are friends, we speak a lot", said Salah.
But anything less than three points would have been cruel on Liverpool, which punished mistakes from Tottenham goalkeeper Michel Vorm and the rest of his error-prone team.
"I don't know exactly what it means but to focus on one competition can only be if maybe you are already out of the competition almost".