Sometimes Dashwood girls don't look like sisters.
Elinor is all calm and reason, and can be trusted for practical and common sense opinions.
Marianne, on the other hand, is all about sensitivity, full of passionate and romantic feeling.
He has no time for boring common sense, nor for middle-aged men in their mid-30s who are past the age of marriage.
True love can only be felt by young people, of course.
And if your heart is broken at the age of seventeen, how can you hope to recover from the passionate misery that fills your life, waking up and sleeping?