Percy Bysshe Shelley on emotion

Revenge is the naked idol of the worship of a semi-barbarous age.

Gold is a living god and rules in scorn,
All earthly things but virtue.

Love’s very pain is sweet,
But its reward is in the world divine
Which, if not here, it builds beyond the grave.

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