“Beyond the heaven there is the country of heart,
here dwell the deepest secret nobody knows,
here the bud see the bud, the mind
can't hide its darkness and the shadow
of the soul is illuminated,
and this is the miracle that's keeping
the stars in harmony orbit.”

Source: Queen Margot, or Marguerite de Valois

Epitaph he composed for himself a few months before he died, as quoted in Calculusː Multivariable (2006) by Steven G. Krantz and Brian E. Blank. p. 126
Unsourced variant: I used to measure the Heavens, now I measure the shadows of Earth. The mind belonged to Heaven, the body's shadow lies here.

Frankenstein, trying to explain to his fiancee why he experiments the way he does
Frankenstein (1931)

Song lyrics, The Red Shoes (1993)
Context: We take all the telescopes
And we turn them inside out
And we point them away from the big sky.
Put your eye right up to the glass.
Here we'll find the constellation of the heart.
Steer your life by these stars
On the unconditional chance
'Tis here where Hell and Heaven dance.
This is the constellation of the heart.

Variant: I love you as one loves certain dark things, secretly, between the shadow and the soul.
Source: 100 Love Sonnets

Heretics and Heresies (1874)
Context: By this time the whole world should know that the real Bible has not yet been written, but is being written, and that it will never be finished until the race begins its downward march, or ceases to exist.
The real Bible is not the work of inspired men, nor prophets, nor apostles, nor evangelists, nor of Christs. Every man who finds a fact, adds, as it were, a word to this great book. It is not attested by prophecy, by miracles or signs. It makes no appeal to faith, to ignorance, to credulity or fear. It has no punishment for unbelief, and no reward for hypocrisy. It appeals to man in the name of demonstration. It has nothing to conceal. It has no fear of being read, of being contradicted, of being investigated and understood. It does not pretend to be holy, or sacred; it simply claims to be true. It challenges the scrutiny of all, and implores every reader to verify every line for himself. It is incapable of being blasphemed. This book appeals to all the surroundings of man. Each thing that exists testifies of its perfection. The earth, with its heart of fire and crowns of snow; with its forests and plains, its rocks and seas; with its every wave and cloud; with its every leaf and bud and flower, confirms its every word, and the solemn stars, shining in the infinite abysses, are the eternal witnesses of its truth.

The Lost Star from The Literary Souvenir, 1828
The Vow of the Peacock (1835)

Spring Song http://books.google.com/books?id=bkFLAAAAIAAJ&q=%22Listen+buds+it's+March+twenty+first+don't+you+know+enough+to+burst%22&pg=PA138#v=onepage
I'm a Stranger Here Myself (1938)
Context: Listen, buds, it's March twenty first;
Don't you know enough to burst?
Come on, birds, unlock your throats!
Come on, gardeners, shed your coats!

While speaking with a western journalist during proceedings of the Agartala conspiracy trial. Mujib was released within in seven months of his arrest as a result of mass agitation and wide scale civil disobedience in East Pakistan. http://www.thedailystar.net/magazine/2008/08/04/chintito.htm
Quote, Other