| Ludwig von Mises | Life and reality are neither logical nor illogical; they are simply given. | Austrian Economics: An Anthology | p. 156 | Reason |
| Ludwig von Mises | Man has only one tool to fight error: reason. | Human Action | p. 187; p. 187 | Reason |
| Ludwig von Mises | The only statement that can be predicated with regard to reason is that it is the mark that distinguishes man from animals and has brought about everything that is specifically human. | Human Action | p. 91; p. 91 | Reason |
| Ludwig von Mises | Abstract thought is independent of the wishes which move the thinker and of the aims for which he strives. | Socialism | p. 317 | Reason |
| Ludwig von Mises | The wish is father to the thought, says a figure of speech. What it means is that the wish is the father of faith. | Socialism | p. 317n | Reason |
| Ludwig von Mises | It is vain to object that life and reality are not logical. Life and reality are neither logical nor illogical; they are simply given. But logic is the only tool available to man for the comprehension of both. | Human Action | pp. 67-68; p. 67 | Reason |
| Ludwig von Mises | Man uses reason in order to choose between the incompatible satisfactions of conflicting desires. | Human Action | p. 173; p. 174 | Reason |
| Ludwig von Mises | Reason is mans particular and characteristic feature. There is no need for praxeology to raise the question whether reason is a suitable tool for the cognition of ultimate and absolute truth. It deals with reason only as far as it enables man to act. | Human Action | p. 177; p. 177 | Reason |
| Ludwig von Mises | Logical thinking and real life are not two separate orbits. Logic is for man the only means to master the problems of reality. | Human Action | p. 185; p. 185 | Reason |
| Ludwig von Mises | The proof of a theory is in its reasoning, not in its sponsorship. | The Theory of Money and Credit | p. 99 | Reason |
| Ludwig von Mises | Not everything that exists today is reasonable; but this does not mean that everything that does not exist is sensible. | Interventionism | p. 89 | Reason |
| Ludwig von Mises | What mankind needs today is liberation from the rule of nonsensical slogans and a return to sound reasoning. | Interventionism | p. 90 | Reason |
| Ludwig von Mises | Reason is the main resource of man in his struggle for survival. | Omnipotent Government | p. 121 | Reason |
| Ludwig von Mises | The Enlightenment did not put its hopes upon the more or less accidental emergence of well-intentioned rulers and provident sages. Its optimism concerning mankinds future was founded upon the double faith in the goodness of man and in his rational mind. | The Historical Setting of the Austrian School | p. 34 | Reason |
| Ludwig von Mises | Reason is mans foremost equipment in the biological struggle for the preservation and expansion of his existence and survival. It would not have any function and would not have developed at all in the fools paradise. | Money, Method, and the Market Process | p. 35 | Reason |