The management of fertility is one of the most important functions of adulthood.
— Germaine Greer

It is the genius of our Constitution that under its shelter of enduring institutions and rooted principles there is ample room for the rich fertility of American political invention.
Lyndon B. Johnson fertility quote

Dancing with abandon, turning a tango into a fertility rite.
— Marshall Pugh

It is sad, no doubt, to exhaust one's strength and one's days in cleaving the bosom of this jealous earth, which compels us to wring from it the treasures of its fertility, when a bit of the blackest and coarsest bread is, at the end of the day's work, the sole recompense and the sole profit attaching to so arduous a toil.
— George Sand

Mathematics is not a book confined within a cover and bound between brazen clasps, whose contents it needs only patience to ransack; it is not a mine, whose treasures may take long to reduce into possession, but which fill only a limited number of veins and lodes; it is not a soil, whose fertility can be exhausted by the yield of successive harvests; it is not a continent or an ocean, whose area can be mapped out and its contour defined: it is limitless as that space which it finds too narrow for its aspirations; its possibilities are as infinite as the worlds which are forever crowding in and multiplying upon the astronomer's gaze.
— James Joseph Sylvester