82 The expressive and symbolic image of Christ’s heart is not the only means granted us by the Holy Spirit for encountering the love of Christ, yet it is, as we have seen, an especially privileged one. Even so, it constantly needs to be enriched, deepened and renewed through meditation, the reading of the Gospel and growth in spiritual maturity. Pius XII made it clear that the Church does not claim that, “we must contemplate and adore in the heart of Jesus a ‘formal’ image, that is, a perfect and absolute sign of his divine love, for the essence of this love can in no way be adequately expressed by any created image whatsoever”.
Source: Dilexit Nos (Vatican.va)