For one human being to love another; that is perhaps the most difficult of all our tasks, the ultimate, the last test and proof, the work for which all other work is but preparation.

Rainer Maria Rilke

Perhaps the feelings that we experience when we are in love represent a normal state. Being in love shows a person who he should be.

Anton Chekhov

One's first love is always perfect until one meets one's second love.

Elizabeth Aston

All love that has not friendship for its base, is like a mansion built upon sand.

Ella Wheeler Wilcox,

What else is love but understanding and rejoicing in the fact that another person lives, acts, and experiences otherwise than we do…?

Friedrich Nietzsche