Aristotle
First systematic biologist, classified over 500 species
Quotes by Aristotle
The wise man does not expose himself to danger unnecessarily, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life - knowing that under certain conditions it is not worthwhile to live.
The true and the beautiful are everywhere.
The beginning of all things is the greatest thing, for it contains all the rest.
The soul is in a way all existing things.
The wise man seeks not to find pleasure in things, but to avoid pain.
Man is the only animal that blushes. Or needs to.
Poetry is more philosophical and of graver import than history, for poetry tends to express the universal, history the particular.
The intellect is the highest part of man.
It is well to be informed about the reasons for others' beliefs, and to know what they believe, but it is not necessary to believe everything that one is told.
Probable impossibilities are to be preferred to improbable possibilities.
The city is a community of equals, aiming at the best life possible.
The true courage is in facing danger when you are afraid.
The worst form of inequality is to try to make unequal things equal.
The wise man does not seek pleasure, but freedom from trouble.
The mark of a perfect man is to love all mankind.
The true object of all human life is play.
We must not only aim at what is possible, but also at what is good.
The most perfect political community is one in which the middle class is in control.
The citizen must be molded to suit the form of government under which he lives.
The state is by nature clearly prior to the family and to the individual.