Here comes the tricky bit. The art of finding the balancing act and of putting into practice in the most dangerous place of all.
Because, as much as Brendan Rodgers has always bristled at the very mention of the word ‘pragmatism’ – or of its importance against Europe’s elite – he’s learned enough over these past seven years to realise that at least a little bit of it is required on nights such as these.
Where once he said there was no need for Celtic to curb their enthusiasm for front foot football on the biggest stage of all, he accepts now that a different structural approach might be required when Lazio arrive in the east end of Glasgow tonight for the second match of Group E.
Even if he does so a little grudgingly. This time last year it was Ange Postecoglou who was refusing to learn the same lesson.