Action Quote by Derek Parfit

“Everything that motivates living creatures is based on some weakness or flaw. Hunger motivates animals. Lust motivates animals. Fear and pain motivate animals. A…

— Scott Adams

Only to the rational animal is it given to follow voluntarily what happens; but simply to follow is a necessity imposed on all.

— Marcus Aurelius

Motivation is an inner force that compels behavior.

— Denis Waitley

In appropriate circumstances we are justified in using humans to achieve goals (or the goal of assisting animals).

— Peter Singer

Altruism has always been one of biology's deep mysteries. Why should any animal, off on its own, specified and labeled by all sorts of…

— Lewis Thomas

There is reason to believe that voluntary activity, more than highly developed intellect, distinguishes humans from the animals which stand closest to them.

— Lev S. Vygotsky

“To motivate” is the act of giving somebody a reason or incentive to do things.”

— Pearl Zhu

Animals have genes for altruism, and those genes have been selected in the evolution of many creatures because of the advantage they confer for…

— Lewis Thomas

Answer me, you who believe that animals are only machines. Has nature arranged for this animal to have all the machinery of feelings only…

— Voltaire

The animal has no intellectual capacity to justify or to find reasons to exist. An animal just exists because it's the natural thing to…

— Steven Spielberg

There is in all animals a sense of duty that man condescends to call instinct.

— Robert Breault

“Whether this propensity be one of those original principles in human nature of which no further account can be given; or whether, as seems…

— Adam Smith