Mikhail Lermontov - Gratitude

For all, for all! I thank you, o my dear:
For passions' deeply hidden pledge,
For poison of a kiss, and stinging of a tear,
Abuse by friends, and enemies' revenge;
For soul's light, extinguished in a prison,
For things by which I was deceived before.
But do not give me any real reason
To give you thanks from now any more.

Mikhail Lermontov

http://www.poemhunter.com/poem/gratitude-50/