In order to deal with reality successfully - to pursue and achieve the values which his life requires - man needs self-esteem; he needs to be confident of his efficacy and worth.

Now you see, Dr. Stadler, you're speaking as if this book were addressing to a thinking audience. If it were, one would have to be concerned with such matters as accuracy, validity, logic and the prestige of science. But it isn't. It's addressed to the public.

A rational process is a moral process. You may make an error at any step of it, with nothing to protect you but your own severity, or you may try to cheat, to fake the evidence and evade the effort of the quest - but if devotion to the truth is the hallmark of morality, then there is no greater, nobler, more heroic form of devotion than the act of a man who assumes the responsibility of thinking.

No advocate of reason can claim the right to force his ideas on others. No advocate of the free mind can claim the right to force the minds of others. No rational society, no co-operation, no agreement, no understanding, no discussion are possible among men who propose to substitute guns for rational persuasion.

Live and act within the limit of your knowledge and keep expanding it to the limit of your life.

A genius is a genius, regardless of the number of morons who belong to the same race - and a moron is a moron, regardless of the number of geniuses who share his racial origin.

Peter Keating: "Do you always have to have a purpose? Do you always have to be so damn serious? Can't you ever do things without reason, just like everybody else? You're so serious, so old. Everything's important with you. Everything's great, significant in some way, every minute, even when you keep still. Can't you ever be comfortable-and unimportant?" | Howard Roark: "No."