Carl Sagan on emotion

Imagination will often carry us to worlds that never were. But without it, we go nowhere.

For small creatures such as we the vastness is bearable only through love.

Extraordinary claims require extraordinary proof.

Mankind are governed more by their feelings than by reason.

Samuel Adams1722–1803Letter to Samuel Cooper (30 April 1776)

I am very conscious of the fact that our feelings and strivings are often contradictory and obscure and that they cannot be expressed in easy and simple formulas.

Albert Einstein1879–1955Why Socialism? (1949)

Never apologize for showing feeling, my friend. Remember that when you do so, you apologize for truth.

Benjamin Disraeli1804–1881Contarini Fleming (1832), Part 1, Chapter 13