The line between lawful and unlawful abortion will be marked by the fact of having sensation and being alive.

-Aristotle
Aristotle

Whether if soul did not exist time would exist or not, is a question that may fairly be asked; for if there cannot be someone to count there cannot be anything that can be counted, so that evidently there cannot be number; for number is either what has been, or what can be, counted.

Aristotle
The pleasures arising from thinking and learning will make us think and learn all the more. 1153a 23
Aristotle

Piety requires us to honor truth above our friends.

Aristotle
So we must lay it down that the association which is a state exists not for the purpose of living together but for the sake of noble actions. Those who contribute most to this kind of association are for that very reason entitled to a larger share in the state than those who, though they may be equal or even superior in free birth and in family, are inferior in the virtue that belongs to a citizen. Similarly they are entitled to a larger share than those who are superior in riches but inferior in virtue.
Aristotle

All human happiness and misery take the form of action.

Aristotle
We ought, so far as it lies within our power, to aspire to immortality, and do all that we can to live in conformity with the highest that is within us; for even if it is small in quantity, in power and preciousness, it far excels all the rest.
Aristotle

A person's life persuades better than his word.

Aristotle
So virtue is a purposive disposition, lying in a mean that is relative to us and determined by a rational principle, and by that which a prudent man would use to determine it. It is a mean between two kinds of vice, one of excess and the other of deficiency...
Aristotle

Happiness depends upon ourselves.

Aristotle
What is common to many is least taken care of, for all men have greater regard for what is their own than what they possess in common with others.