Science, in its ultimate ideal, consists of a set of propositions arranged in a hierarchy, the lowest level of the hierarchy being concerned with particular facts, and the highest with some general law, governing everything in the universe. The various levels in the hierarchy have a two-fold logical connection, travelling one up, one down; the upward connection proceeds by induction, the downward by deduction.
Bertrand RussellWhat Galileo and Newton were to the seventeenth century, Darwin was to the nineteenth.
Bertrand RussellThere is no reason to suppose that the world had a beginning at all. The idea that things must have a beginning is really due to the poverty of our thoughts.
Bertrand RussellThe secrets to happiness include enterprise, exploration of one's interests and the overcoming of obstacles.
Bertrand Russell