The only way to do great work is to love what you do.

The true value of a human being is determined primarily by the measure and the sense in which he has attained liberation from the self.

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.

Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.

The only person who cannot be helped is that individual who blames others.