The action required to sustain human life is primarily...
The action required to sustain human life is primarily intellectual; everything man needs has to be discovered by his mind and produced by his effort.
![Ayn Rand Quote About Men, Effort, Mind: The Action Required To Sustain...](http://qt.azureedge.net/resources/generated-images-large/the-action-required-to-sustain-human-life-is-primarily-intellectual-everything-m-7547a0ada8e03b627b49d75ade30d094.jpg)
The action required to sustain human life is primarily intellectual; everything man needs has to be discovered by his mind and produced by his effort.