Authors:

If I were to speak your kind of language, I would say that man's only moral commandment is: Thou shalt think. But a 'moral commandment' is a contradiction in terms. The moral is the chosen, not the forced; the understood, not the obeyed. The moral is the rational, and reason accepts no commandments.

Ayn Rand (2005). “Atlas Shrugged”, p.961, Penguin
If I were to speak your kind of language, I would say that man's only moral commandment is: Thou shalt think. But a 'moral commandment' is a contradiction in terms. The moral is the chosen, not the forced; the