Definition of habitability :
- There are also in the poem some curious thoughts about the Arctic Circle, its magnetic heat, and possible habitability; also others about thought- reading and the like; all this being long in advance of the age, for that ode was published by Bosworth in 1852. Also, I anticipated then as now- " To fly as a bird in the air Despot man doth dare! - "My Life as an Author", Martin Farquhar Tupper.
- Much less was there any attempt yet by Thorwald to resume the argument about the habitability of other worlds. - "Daybreak: A Romance of an Old World", James Cowan.
- The conclusions which the Italian astronomer arrived at with regard to its habitability were not supported by telescopic evidence sufficient to justify such a belief. - "The Astronomy of Milton's 'Paradise Lost'", Thomas Orchard.