Solidity is so inseparable an idea from body, that upon that depends its filling of space, its contact, impulse, and communication of motion upon impulse.
Solidotasuna hain banaezina da gorputzaren ideiatik, non harexen menpe dagoen gorputz horrek espazio bat betetzea, beste gorputz batekin kontaktuan egotea, hari bulkada ematea eta bulkada horren arabera higidura komunikatzea.