Spurs won their opening two matches against Newcastle and Fulham before thrashing Manchester United at Old Trafford last week to ensure they've made the flawless start to the 2018/19 campaign. But the team showed character and in the second half we were much better, the team dominated. I think we need to improve our performance. We need to be better.
"It was an important start but we know it's only the beginning".
Spurs have also been excellent, especially in their last win, a 3-0 battering of Manchester United at Old Trafford.More news: ETH Futures: Bad for Ethereum, Good for Bitcoin, Says Tom Lee
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Arsenal travel to the Cardiff City Stadium to face Neil Warnock side who are winless in their last 113 games against the Gunners all competitions.
"After you win the game [against United] I think you need to respect more this competition", said Pochettino.
"It is important to have a good balance and, in this moment, if we don't concede chances to score and concede goals, it will be easier for us to get points and win games". If we want to fight and be a contender, we need to talk on the pitch and not outside.
"If we're not ready and we believe because we beat Manchester United 3-0 that all is fantastic, I think we are going to crash".
"I am not a person who is going to convince players to stay or not stay", Pochettino told a news conference.