Focus on being productive instead of busy.
Every fish returned to the sea today is an investment in tomorrow's catch.
The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.
The world is a tragedy to those who feel, but a comedy to those who think.
Understanding the fundamental forces of nature is essential to comprehending the cosmos.