The feeling individual appeared weaköhe felt only his own weakness.But if he accepted his weakness and his separateness and descended into himself, intensifying his loneliness, he discovered his solidarity with other isolated creatures.

-Bellow, Saul
  Nobel prize lecture, Stockholm,12 Dec.

The economic services that it can render are picayune compared to the moral effect that it produces, and its true function is to create in two or more persons a feeling of solidarity.

-Durkheim, EŁ  mile
  Of labour. The Division of Labor in Society (translated by George Simpson,1933).

He who once became aware of the power of Solidarity and who breathed the air of freedom will not be crushed.

-Walesa, Lech
  Nobel peace prize lecture, read on his behalf,11 Dec.