Always look at what you have left. Never look at what you have lost.
The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.
The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.
Laughter is timeless,  imagination has no age, and dreams are forever.
The best time to plant a tree was 20 years ago; the second best time is now.
Those who dream by day are cognizant of many things which escape those who dream only by night.