...play, so far from being "by play," if I may so speak…

“...play [is] an instinct developed by natural selection ... and ... on a level with the other instincts which are developed for their utility.…

— Karl Groos

There was the natural human survival instinct to be optimistic.

— Barbara Demick

All men have an instinct for conflict: at least, all healthy men.

— Hilaire Belloc

I have never been a quitter. To leave office before my term is completed is opposed to every instinct in my body. But as…

— Richard M. Nixon

A man may quarrel with himself alone; that is, by controverting his better instincts and knowledge when brought face to face with temptation.

— William Ellery Channing

You have to follow your instinct, and that's what I've tried to do all my life, whether in music or anything.

— Erol Alkan

How could they say that they truly loved each other? They had simply grown up together, been children together, and the proximity of it,…

— David Guterson

As a kid, in the Runaways, I would see the interviewers start to ask about our personal lives and what we did — and…

— Joan Jett

The dog is guided by kindly instinct to the man or woman whose heart is open to his advances. The cat often leaves the…

— Agnes Repplier

You don't think. It's all instinct. If you stop to think, you're gone.

— Sugar Ray Robinson

I never think of things rationally or intellectually. I swear, every single decision I make is just instinct and my instincts tend to be…

— Neill Blomkamp

Empires fall, ids explode, great symphonies are written, and behind all of it is a single instinct that demands satisfaction.

— Sherwin B. Nuland

I will follow my instincts, be myself for good or ill, and see what will be the upshot.

— John Muir

Imitation is the first instinct of the awakening mind.

— Maria Montessori

Nothing is so powerful as an insight into human nature... what compulsions drive a man, what instincts dominate his action. If you know these…

— William Bernbach