"be cruel to be kind" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions verbales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Oxymores en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais à traduire",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "William Shakespeare, Hamlet, Acte III scène 4",
          "text": "I do repent; but heaven hath pleas'd it so\n To punish me with this, and this with me,\nThat I must be their scourge and minister.\nI will bestow him, and will answer well\nThe death I gave him. So again good night.\nI must be cruel only to be kind.\nThus bad begins and worse remains behind."
        }
      ],
      "glosses": [
        "Faire ou dire des choses dures à quelqu'un, quand on pense que ça lui sera malgré tout bénéfique."
      ],
      "id": "fr-be_cruel_to_be_kind-en-verb-DSZda6Oe",
      "raw_tags": [
        "Paradoxe"
      ]
    }
  ],
  "word": "be cruel to be kind"
}

{
  "categories": [
    "Locutions verbales en anglais",
    "Oxymores en anglais",
    "anglais"
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "senses": [
    {
      "categories": [
        "Exemples en anglais",
        "Exemples en anglais à traduire"
      ],
      "examples": [
        {
          "ref": "William Shakespeare, Hamlet, Acte III scène 4",
          "text": "I do repent; but heaven hath pleas'd it so\n To punish me with this, and this with me,\nThat I must be their scourge and minister.\nI will bestow him, and will answer well\nThe death I gave him. So again good night.\nI must be cruel only to be kind.\nThus bad begins and worse remains behind."
        }
      ],
      "glosses": [
        "Faire ou dire des choses dures à quelqu'un, quand on pense que ça lui sera malgré tout bénéfique."
      ],
      "raw_tags": [
        "Paradoxe"
      ]
    }
  ],
  "word": "be cruel to be kind"
}