He did not know or own or trust or beseech the land. If a seed dropped did not germinate, it was nothing. If the young thrusting plant withered in drought or drowned in a flood of rain, it was no more to the driver than to the tractor.
– John Steinbeck
The Grapes of Wrath, Chapter 5. This passage spells out how the tractor driver has no connection to or affinity with the land he is paid to bulldoze. This is in contrast to the tenant farmer, who feels very close to the land.