Anyone who cannot cope with mathematics is not fully human. At best, he is a tolerable subhuman who has learned to wear his shoes, bathe, and not make messes in the house.
Robert A. HeinleinOf all the nonsense that twists the world, the concept of 'altruism' is the worst. People do what they want to, every time. If it pains them to make a choice - if the choice looks like a 'sacrifice' - you can be sure that it is no nobler than the discomfort caused by greediness... the necessity of deciding between two things you want when you can't have both.
Robert A. Heinlein