...The true pessimists are those who continue to seek happiness. Wait for two or three years and then go and ask them what they have attained.

Can I ask you where your optimism lies?

It lies in being aware that the drama of our civilization consists in a non-harmonious development between the requirements of technology and the needs of the spirit, whose perfection is the true purpose of life.
[....]
Cheerful people seem guilty to me, because they can’t comprehend the mournful value of existence. I accept happiness only in children and the elderly, with all others I am intolerant.

Tarkovski