In art, the hand can never execute anything higher than the heart can imagine.
Ralph Waldo Emerson

The struggle itself towards the heights is enough to fill a man's heart. One must imagine Sisyphus happy.
Albert Camus

Imagination is the beginning of creation. You imagine what you desire, you will what you imagine and at last you create what you will.
George Bernard Shaw

I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.
Rene Descartes

A man, to be greatly good, must imagine intensely and comprehensively; he must put himself in the place of another and of many others; the pains and pleasures of his species must become his own.
Percy Bysshe Shelley