This is a part of the acknowledgement of my Ph.D. thesis at University of Minnesota:
I would like to thank my family for their support over the years. It was the hardest for my mother to allow me to go so far away from home. I cannot thank her enough for her sacrifices for me over the years. Waking up at 4.30 am everyday so that we could get fresh lunch for school every day for 18 continuous years, even when she was sick, is just a small example of her sacrifices.