On Valentine's Day, there's just one word that dominates our minds: love ... but chocolate comes in a close second. Over the centuries, people have had plenty to say about both topics, giving us endless lines of romantic poetry, funny observations about relationships and sweet sayings that help us express how we feel. These 14 Valentine's Day quotes from authors, musicians, philosophers and even Albert Einstein can provide inspiration for your holiday cards and greetings.

“All you need is love. But a little chocolate now and then doesn't hurt.”

Charles M. Schulz, "Peanuts" cartoonist

“Gravitation is not responsible for people falling in love.”

Albert Einstein, physicist

“I don't understand why Cupid was chosen to represent Valentine's Day. When I think about romance, the last thing on my mind is a short, chubby toddler coming at me with a weapon.”

Author unknown

“We say love is blind, and the figure of Cupid is drawn with a bandage around his eyes. Blind — yes, because he does not see what he does not like; but the sharpest-sighted hunter in the universe is Love for finding what he seeks, and only that.”

Ralph Waldo Emerson, written in an essay entitled "Beauty" in 1860

“You know you're in love when you can't fall asleep because reality is finally better than your dreams.”

Theodore Seuss Geisel, better known as Dr. Seuss, American writer and cartoonist

“Forget love — I'd rather fall in chocolate.”

Author unknown

"Today is Valentine's Day. Or, as men like to call it, Extortion day.”

Jay Leno, comedian

“Love is a grave mental disease.”

Plato, Greek philosopher

“Love looks not with the eyes, but with the mind, And therefore is winged Cupid painted blind.”

William Shakespeare, English playwright, written in "A Midsummer Night's Dream," 1594

“How can a woman be expected to be happy with a man who insists on treating her as if she were a perfectly normal human being?”

Oscar Wilde, Irish writer and poet

“Oh, innocent victims of Cupid, remember this terse little verse: To let a fool kiss you is stupid. To let a kiss fool you is worse.”

Edgar Yipsel Harburg, American song lyricist

"Love is the strongest force the world possesses, and yet it is the humblest imaginable.”

Mahatma Gandhi, Indian religious and political leader

"Love is a fire. But whether it is going to warm your hearth or burn down your house, you can never tell."

Joan Crawford, American actress

"The minute I heard my first love story, I started looking for you, not knowing how blind that was. Lovers don't finally meet somewhere. They're in each other all along."

Jalal-Uddin Rumi, Turkish Sufi poet