The difference between animals and humans is that animals change themselves for the environment, but humans change the environment for themselves.
Ayn RandLove is an expression and assertion of self-esteem, a response to one's own values in the person of another. One gains a profoundly personal, selfish joy from the mere existence of the person one loves. It is one's own personal, selfish happiness that one seeks, earns, and derives from love.
Ayn RandTo arrive at a contradiction is to confess an error in one's thinking; to maintain a contradiction is to abdicate one's mind and to evict oneself from the realm of reality.
Ayn RandAnd here, over the portals of my fort, I shall cut in the stone the word which is to be my beacon and my banner. The word which will not die should we all perish in battle. The word which can never die on this earth, for it is the heart of it and the meaning and the glory. The sacred word: EGO
Ayn RandDo not let your fire go out, spark by irreplaceable spark in the hopeless swamps of the not-quite, the not-yet, and the not-at-all. Do not let the hero in your soul perish in lonely frustration for the life you deserved and have never been able to reach. The world you desire can be won. It exists.. it is real.. it is possible.. it's yours.
Ayn Rand