He who cannot by his labor suffice for his own support has no claim to the privilege of helping himself to the money of others. By becoming dependent on the remaining members of the community for actual subsistence, he abdicates his claim to equal rights for them I other respects.

Over one's mind and over one's body the individual is sovereign.

They who know how to employ opportunities will often find that they can create them; and what we can achieve depends less on the amount of time we possess than on the use we make of our time.

Liberty consists in doing what one desires.

The fatal tendency of mankind to leave off thinking about a thing when it is no longer doubtful is the cause of half their errors.

It appears, then, to be a condition of a genuinely scientific hypothesis, that it be not destined always to remain an hypothesis, but be certain to be either proved or disproved by.. .comparison with observed facts.

Pleasure and freedom from pain, are the only things desirable as ends.