Freedom in general may be defined as the absence of obstacles to the realization of desires.
Bertrand RussellPure mathematics consists entirely of assertions to the effect that, if such and such a proposition is true of anything, then suchand such another proposition is true of that thing.... Thus mathematics may be defined as the subject in which we never know what we are talking about, nor whether what we are saying is true.
Bertrand RussellEven if it is indifferent to human desires, as it seems to be; if human life is a passing episode, hardly noticeable in the vastness of cosmic processes; if there is no superhuman purpose, and no hope of ultimate salvation, it is better to know and acknowledge this truth than to endeavor, in futile self-assertion, to order the universe to be what we find comfortable.
Bertrand Russell