Pope Francis
Fratelli Tutti §150
Fratelli Tutti: On Fraternity and Social Friendship
150 To see things in this way brings the joyful realization that no one people, culture or individual can achieve everything on its own: to attain fulfilment in life we need others. An awareness of our own limitations and incompleteness, far from being a threat, becomes the key to envisaging and pursuing a common project. For “man is a limited being who is himself limitless”.
Source: Fratelli Tutti (Vatican.va)