Show me your achievement, and the knowledge will give me courage for mine.

I don’t approve of religion.

Any material element or resource which, in order to become of use or value to men, requires the application of human knowledge and effort, should be private property-by the right of those who apply the knowledge and effort.

To 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.

Non-thinking is an act of annihilation, a wish to negate existence, an attempt to wipe out reality. But existence exists; reality is not to be wiped out, it will merely wipe out the wiper

The spread of evil is the symptom of a vacuum. Whenever evil wins, it is only by default: by the moral failure of those who evade the fact that there can be no compromise on basic principles.

Productiveness is your acceptance of morality, your recognition of the fact that you choose to live-that productive work is the process by which man's consciousness controls his existence, a constant process of acquiring knowledge and shaping matter to fit one's purpose, of translating an idea into physical form, of remaking the earth in the image of one's values-that all work is creative work if done by a thinking mind.