Letters 73.7

The foolish greed of mortals makes a distinction between possession and ownership, and believes that it has ownership in nothing in which the general public has a share. But our philosopher considers nothing more truly his own than that which he shares in partnership with all mankind. For these things would not be common property, as indeed they are, unless every individual had his quota; even a joint interest based upon the slightest share makes one a partner.

Seneca, Letters to Lucilius 73.7, translated by Richard Mott Gummere