Don't write your name on sand, waves will wash it away. Don't write your name in sky, wind may blow it away. Write your name in the hearts of people, that's where it will stay.
The intersection of cryptography and complexity theory is where some of the most fascinating problems in computer science reside.
If ease of use was the only requirement, everyone would still be riding tricycles.
The process of scientific discovery is as important as the discovery itself, for it teaches us about the nature of inquiry and the limits of our understanding.