All suggested accounts of the origin of the solar system are subject to serious objections. The conclusion in the present state of the subject would be that the system cannot exist.
Without freedom there can be no morality.
We should not pretend to understand the world only by the intellect. The judgement of the intellect is only part of the truth.
The greater the tension, the greater is the potential.
For better to come, good must stand aside.
Every individual needs revolution, inner division, overthrow of the existing order, and renewal, but not by forcing them upon his neighbors under the hypocritical cloak of Christian love or the sense of social responsibility or any of the other beautiful euphemisms for unconscious urges to personal power.
Commendation heals; condemnation destroys.
Give crowns and pounds and guineas But not your heart away; Give pearls away and rubies, But keep your fancy free.
In general, if any branch of trade, or any division of labour, be advantageous to the public, the freer and more general the competition, it will always be the more so.
The idle man does not know what it is to enjoy rest, for he has not earned it.
Nothing is demonstrable, unless the contrary implies a contradiction. Nothing, that is distinctly conceivable, implies a contradiction. Whatever we conceive as existent, we can also conceive as non-existent. There is no being, therefore, whose non-existence implies a contradiction. Consequently there is no being, whose existence is demonstrable.